I definitely don't think you get the "max" without betting on the flop or turn. You've got the nuts, and you're not worried about being outdrawn, but you can still get some more money in there IMO. I would probably bet both the flop and turn for value w/ early position here, because most players can't put you on a flopped nut flush. UTG+1 must have a decent hand, so unless he raised your river bet, I think you could have gotten more out of him. I don't even play at the 200's though so what do I know.