Never too early to plan...many folks book their condos a year out! I know we do!
You mentioned Kahana Beach but I think you probably meant Kaanapali Beach...look at the condos on the north end, Honua Kai, Westin Villas and Aston Maui Kaanapali Villas.
Be aware that there is not a lot of night-life on Maui but in that area you will close to a few bars and Lahaina Town.
Most folks call it an early night because of the time change and all the water and sun filled activities.
Start by reading some of the Trip reports and see what appeals to you.
Also go through all the info to the upper right and left on this page.
Lots of wonderful adventures to be had on Maui!