Shiver, movies are still extremely small when crompessed to the dpeg format, 2 gigs is more than ample. If you have anything as massive as the 32gig SDHC, you're gonna have to use a card which autofinds the .nds files(or use somethin like the AceKard feature of just listing the files of.nds as the button thing.
R4 has been outphased now,as jons said on another thread, you only really need it if you're a newb. Well since they're a higher price in Japan, you could try sell it to them.