You’re allowing a good amount of time to spend in the park. I’m always glad to see people staying a couple of nights rather than just rushing through on the way somewhere else, so they can savor it and have a true desert experience. Day 1 looks a bit long since you are going through Titus Canyon. Most people will take 3-4 hours, because there is a lot to see. I’m supposing you’re aware that 4wd and/or high clearance may be needed at any time, depending on current weather.
I would consider saving the sights along 190 east of Furnace Creek for the last day on your return trip to Las Vegas if you have a couple hours leeway; it sounds like you aren’t in a big rush to get back to town because you mentioned wanting to walk around some. From Furnace Creek to Dante’s View is 50 miles round trip, and the driving time on the park roads will probably be 70-80 minutes (not counting time spent out of the car). Zabriskie Point and 20 Mule Team Canyon add only 2-3 miles, but you’ll want to spend some time looking around. Then it’s 25 miles from FC to Stovepipe Wells, where you'll want to allow time for a swim before enjoying the dining room and/or saloon, which are done up with mining artifacts, wagon parts, Native American crafts, and timbers from an old DV mine..
Salt Creek is north of Furnace Creek. You could be flexible with that, depending on how long you take through Titus Canyon and down the North Highway.* You could see it on the way to Furnace Creek, or wait until after lunch on your way to Stovepipe Wells. You could also do it on another day, because a typical visit will be about an hour, give or take a little. The gravel road is a couple miles long and there is a boardwalk along the creek where you can see the lush vegetation, reptiles and birds, and the pupfish which should be active now. There is a trail that goes beyond the boardwalk, but you can get a fine look at this habitat without going that far.
* Depending on when you come out of Titus, another sight in the north end is Ubehebe Crater, It is about 25 miles from the end of Titus. It’s a volcanic crater, made not by an eruption but a steam explosion from molten magna meeting groundwater. You can walk into the crater or around the rim. The soil inside is mainly loose pumice ash, so getting out takes longer than getting in.
If you decide to switch the 190 East leg, on your first afternoon you could go to Devil’s Cornfield, the Sand Dunes, and Mosaic Canyon, since they are near SPW. Everyone loves the Sand Dunes and there’s no such thing as too much time there, but if you feel like a short hike in Mosaic Canyon, maybe save the dunes for late afternoon and sunset when it’s a magical place. (It also is at sunrise, when you can see animal tracks from overnight).
I’m glad you’re going to sample the west side. Relatively few visitors get over there. It’s cooler and greener than the Valley proper, and you might think you are in Sequoia or another mountain park. Not too far after the turnoff, look for Journigan's Mill, where ore from various mines on this side of the Panamint range was refined. You'll see big vats on the hillside, whwere sodium syanide was used to refine gold and silver ore, If you walk around the back, you can see concrete foundations that indicate other big pieces of equipment that are no longer there. Another interesting spot is the Wildrose Charcoal Kilns, 8 miles up Wildrose Canyon Road off Emigrant-Wildrose Road. The stone kilns were built to roast wood into charcoal for use in a mine smelter. That mine was not in DV, but 25 miles away in the mountains south of the present Panamint Springs resort. The elevation was too low and had no trees, so the charcoal was made at Wildrose and hauled across the Panamint Valley. That mine was owned by the father of newspaper baron William Randolph Hearst.
You can exit the park on the southwest end, where there is a tiny ghost town called Ballarat just outside the park boundary. If you’ve seen Rhyolite and will see Death Valley Junction, Ballarat is not a must-see. There are a few adobe and wooden remains from what was a base camp for prospectors in the west side of the Panamint range in the early 20th century.
Harrisburg and the canyon it's in have lots of old mining remains. You’ll want to stop occasionally and scan the areas to the sides of the roads to see old headframes, mills, and other odds and ends. At the Harrisburg camp, which is pretty ramshackle, walk around the back and look around.
Aguereberry Point is 7-8 miles up from Harrisburg. This road is gravel, sometimes very rough. It gets narrow and twisty toward the top. Years ago, I went up there in a regular car in winter, but it isn’t something I’d recommend, lol. The view point was named for a French Basque miner named Jean-Pierre (Pete) Aguereberry, who left home at 19 to seek his fortune in America. He never went back, became a well-known DV fixture, and is buried in Lone Pine. He loved this view, and so does everyone else. TBH, I don’t consider it the best sunset view (though there are no bad views anywhere in DV), because it faces east. However, it will give you a different perspective on the Valley and its natural features. If you stay at Aguereberry until night, remember there is no lighting on the west side; the only controls are reflectors and lane lines on the main road.
On Day 3, if you moved the activities around from Day 1, you wouldn’t do Salt Creek, but you could head straight down to the Badwater area. You could take the morning to see the sights you mentioned (you have them in the logical order for a down and back trip). If you feel you’re short on time, Natural Bridge is the one I’d scratch because it is almost a mile walk from the parking to where the main rock formations start (and there are more beyond the “bridge”). This is a beautiful area, but if you have been to the southern Utah parks, this natural bridge may feel anti-climactic. The other sites require less walking to get a good look and feel for the surroundings, including Golden Canyon—you park and walk right into the canyon and start seeing the colors and eroded formations. It’s possible to hike all the way up to Zabriskie Point.
If time permits, you can have lunch at FC before heading east on 190. Both the Inn and Ranch will have lunch, so take your pick. Even if you don’t spend any money at the Inn, visitors are welcome to visit the beautiful terraced gardens. If you have enough fuel at this point for 125 miles, don’t fill up at Furnace Creek but wait until Pahrump, where the prices might be 20% or more less.
Enjoy your trip!