Okay, for your Pokebank question, this states that Pokemon on the Pokebank will survive if you restart your Pokemon X or Y copy.
As for the Masuda Method, it wold fail because of you're region - each cartridge has a region pre-assigned to the cartridge. It's normally on the sticker of the cartridge, the bottom-right. Sorry.
Hope I helped. :)
Source: Above Link and the many sites confirming that the region decides the Masuda Method.