Hi, the road between Golden and Radium is very scenic, with beautiful views of North America's largest, intact temperate wetland - the upper Columbia Valley. The valley would be most appreciated by nature lovers -bird watchers or canoeists, for eg, however there are few "attractions" in the commercial tourism sense of the word. At the community of Spillimacheen there is a road connecting to the Westside Road and that crosses the Columbia River at the Columbia National Wildlife area. Here you can park beside the road and walk along the river edge. There are several informative signs erected by the "Friends of the Columbia Wetlands" society at various points along highway 95 - watch for these.
Mt. Assiniboine Park does not have road accessible camping. I recommend camping in Kootenay National Park at McLeod Meadows campground (no hookups, however), and then do short half-day hikes into Dog Lake (trailhead right at campground) or Cobb Lake, or a more vigorous and more spectacular half-day hike into the Stanley Glacier.
By the way, both the Trans-Canada highway through Banff and Yoho, and highway 93 through Kootenay have nightmarish traffic at times. In the case of 93, watch out for weekends, especially Friday night and Sunday afternoon/evenings. There is also a risk of wildlife-vehicle collisions, especially if you are driving near dawn or dusk.