Tempting options … We stayed at Coast Blackcomb suites high up on (you guessed it) Blackcomb last visit. I think they’ve changed hands and hence name since but they were ski in and ski out - a short run down to what was the Wizard chair (from memory). Only inconvenience was the distance from the village and the need to rely on the unreliable village bus. Whistler was a blast for us with huge amounts of snow falling in the 11 days we were there in early 2018. In the end it will come down to cost and time available - if it was just me, definitely, but factoring in the costs for two teenage boys (and potentially the older daughter) tends to add up quickly. Current thinking is 4 nights at Revelstoke and 2 weeks at Sun Peaks.If you have enough time and cash on your hands, why not? I've just had a week there, and while Monday was a shocker weather and snow condition wise, things improved on Tuesday and Thursday and Friday were amongst the best days of skiing I've had there since I started going to Whistler in the early 2000s. We also ate ourselves silly at the fine dining options Whistler offers.
If the budget stretches, stay somewhere like the Pan Pacific Mountainside - there's nowhere more convenient for access to both mountains, with the Blackcomb and Whistler gondolas being mere steps away. The rooms have full kitchens, so eating in is easy. Each room has a ski locker assigned so easy to dump the gear at the end of the day and not have it clutter up your room.
We stayed for part of the week at the Hilton - first time there. It is also very convenient for the Whistler gondola. The rooms have kitchenettes so not quite as well equipped as the Pan Pac for cooking full dinners, but breakky is totally doable.