Note that there's zero chance that you won't be able to ski at the places we're talking about. There will be lots of snow, they will be open. The only chance is of having a warming trend, and getting a bit of soft or even slushy conditions. But that's still great skiing mostly at the places we're talking about. You'll be able to ski as much as you want or can stand.
Now about picking a place... lift tickets as I mentioned earlier will be expensive. There's no way to navigate around it. Most major resorts don't have any other deals or discounts or ways to cut costs other than buying online ahead of time. So I'd suggest starting to look at that. Let's assume central Colorado...
-- Copper mountain is cheaper on Thursdays... probably under $100/person
-- Loveland and A-basin are cheaper in general - probably under $100/person every day
-- But they aren't major resorts, so aren't massive, and don't have as much infrastructure - but are still great high altitude places to ski (really high actually, which keeps the snow nice)
-- Winter Park is a little further afield than the rest, which could all be skied in the same week more easily (Breck, Keystone, A-Basin, Loveland, Copper)
-- Vail and Beaver Creek are a little further afield, though not as much as Winter Park, and could be skied to, though they're a little lower
-- Breckenridge will probably be most expensive, between $150 and $200 depending on number of days, Copper, Keystone, and Winter Park not far behind
-- Lift tickets to Breck and Keystone are the same, so if you buy, say, 3 days they can be used at either resort and you could do a day at Vail or Beaver Creek if you wanted to
-- Vail and BC are a bit lower, but will still have great snow (I'll actually be in Vail and likely skiing a few days at Vail and BC, but I'm likely to hit Copper and A-basin too)
-- Buying multiple days online in advance is probably your best bet to get a bit of a discount any place