Not so sure. I think Barnes will get most of his minutes as a small ball PF. Bogut, Barnes, Iggy, Thompson, and Curry lineup is pretty scary for most teams.
That lineup might work in limited situations. They could use it to put away weaker teams. But Barnes definitely won't get "most" of his minutes at PF. He's closer to being a SG than PF.
Iggy's going to play PG a lot backing up Curry. So Mark Jackson could still get all 4 of iggy, curry, thompson, and barnes 30+ minutes a night.