Good luck getting a PS2 emulator to run FFX properly.. FFX is one of the more advanced PS2 games, and there's still no fully functional PS2 emulators since most of the processing is done by the PS2's hardware, not software.
But I'm content with Dissidia, God of War, FF7, and FF8 on my new PSPgo.
But I could play FF9 on my modded PSP-2000 though >.> But in all honesty, I'd rather get a GBA emulator, and play FF5 on it.
Either way.. I got Cloud to lv100, and my Sephiroth is around Lv49.. once I get Sephy above lv51, I'm planning on farming items, and getting his Masamune Blade. And hopefully enough gold for Cloud's lv50-whatever exclusive as well, since I've already got the items for Cloud's.
I'm more or less, going for characters to lv100, getting their exclusive weapons, and mastering all their abilities.. I'll get story modes and all that junk to 100% when everybody's maxed, and it's incredibly easy.