Update: So far I ordered everything! I'm planning to get about 15 power disc packs, maybe just do that once a month. I also ordered a D23 Sorceror Mickey from eBay today. Gotta love those silver stars.
Current plan: check TRU for Crystals straight away, then get everything else at EB, price match with Big W. Getting Wii U/3DS Starters and both iApps.