i think the github link is for ps3? after a lot of searching i managed to find a version of mame without a rom limit so that solves the 150 problem just a shame its stuck on a frontend and cant view folders, saw lots of things about a direct port of final burn by cthulhu32 but looks like it was a project that never got finished and just became part of retroarch,
all in all i think i'll just have to put games that work on either emulator

now i'm going to spend some time downloading gamecube isos i'll come back crying that they don't work later lol