8 Dragons question

Those save states won't work with a hacked rom, will they?

Savestates might works with hacked roms but character stats will be from the original ROM the savestate is based on. Items, monsters and other data (names, stats, etc) should update with data from the hacked ROM. If you get a blank screen after loading a foreign savestate, that's because your ROM is significantly different in comparison to the original ROM.

I don't know about other emulators but ZSNES supports up to 100 savestates per ROM which is enough to have a savestate for pretty much every locations in the game.