Emulation performance is great for ff12. It runs on weaker pcs than many other ps2 games, such as for example persona 4 and zone of the enders 2. If we're lucky.2 there will be a hd port of 12 before you get to that game anyway .

As for ff11, it is a multi player game, but the old story content can be done solo now. The combat dynamics are designed to be the most interesting when playing with others, though, so playing alone all the time might get a bit boring.