Schweitzer is on par with most other large western resorts, tons of terrain, lot's of steeps, bowl skiing and decent trees. You're probably 2 1/2 hours away but it's the biggest and best up here. I've skied all over the west and I enjoy it as much as any other big mountain.
Silver is 1 hour east of Spokane on I-90. The gondola picks you up in town (Kellogg) so there is no real mountain driving to get there, Lookout is 9 miles further east but is only half the size, I'd do Silver first. Silver is going to be half the size of Schweitzer but 1600 acres is still decent especially without the crowds.
We got dumped with snow this last week, probably 2-3 feet at the mountains. Conditions are good now, there are not many skiing, especially midweek. One thing to know is Silver and Lookout are closed on Tuesday and Wednesday due to lack of skiers, Schweitzer is open all week so no problem there.