I don't really have any feelings about the three classes. Except that I do have a problem with the synthesist archtype in a game where you use point buying.<br/><br/>One thing I am wondering. Is there a reason you don't want to use standard Golarion as the world? It's more or less well established and we could put the players in a corner of the world that's less developed like the river kingdoms. That'll cut down on the amount of world building needed.<br/><br/>As for playing characters. I'm totally cool with playing one or two guild masters to guide the PCs through the game and aid them when necessary. I think I'd sit over with having an adventurer (level 2 like) in this game though.