Optix at the Airsoft Gear store can do Age Verification for you, same with Kampfer in Richmond and there's also White Knight around Burnaby area.
You'll get way more options once you get it done. TBH Prices and selection in GVRD are kind of meh IMO.
I'd go King Arms, VFC, or G&P for quality (or SystemA if you have the money to dump into that kind of setup). If you're looking for cheap and budget entry level stuff; JG and CYMA can't be beat, they're like the Tippmann 98 of the airsoft world.
I'm kind of tired at the moment so I don't know if your other questions were answered but if not I'll elaborate later when I have some time.
ಠ_ಠLess QQ more Pew Pew
READY TO >> RACE