1. what you propose will work fine for the stuff up here in squamish ... the cams and nuts all work fine, different people have different preferences
2. DO NOT buy your own gear before leading with more experienced partners ... youll use their gear, find out what you like or dont, and they can inspect yr placements
3. squamish is probably the best place to learn, and you dont need to wait till summer ... weve had a week of sun right now and its DRY ... the rock is excellent, the protection straight forward, theres tons of moderate cragging and multi, and even on many moderates the falls are decently clean ... its known as the kiddie playground of trad for a reason
4. dont bother with doubles as you should be climbing with experienced people who have at least part of a rack when starting out ... usually you need to decide what NOT to bring with 2 somewhat experienced trad leaders ... single + single = double =P