I already did this with GOTG and The Winter Soldier, wasn't that much of a problem..
But i think it's getting easier and easier to get releases worldwide as they become available at more shops nowadays..
Goodluck, I did it with Thor 2 & CA2, but now I'm only sticking with 3D combo packs and I'll be getting a lot of these on eBay for bargain prices
leaning more toward the premium releases instead (with a few exceptions)
I like the Aussie slips though.