Guess a few questions to ask, since they weren't addressed in the OP:
1.) Play-Asia the best place to get Japanese PSN cards? I might just have to give in & get a 10,000 yen card/code (though if I wait for a sale, I'd probably just get a 5,000 & 3,000), but I can use the left over funds on a PSOne Classic or two that's only on the JPN PSN.
2.) As someone who's mainly played Project Diva on Vita, will it be hard to adjust to playing on console due to possible lag, lack of headphones, & such?
3.) It shouldn't be too hard to learn how to navigate through menus & such if I'm familiar with the PD games on PS3/Vita, correct? Perhaps a translation guide would be available sometime soon?
4.) "Like the Wind" is that Power Drift remix, right? I'm guessing all the Sega songs are in one pack (I see After Burner, Magical Sound Shower, & that Quartet song).