omaha hi hand. did i play this right?

[mtymouse911]

The game is a pretty loose $2 spread limit. I come in for $.50. Several player see the flop. I am in FP and flop a K high flush. I bet $1 to see whether the A flush is out. 2 players stay in. One player will play anything but has been on the best run I've ever seen in my life. The other player is pretty solid but could be in with two pair or 3 of a kind. An irrelevant card comes on the turn. I bet $1 still scared of the a flush(the reason for this is both players slow play A LOT). I am praying that a the board doesn't pair. Sure enough the river pairs and 8 and the fairly solid player almost pees his pants. He can't get to his chips fast enough. I am sure he has at least the boat. I check and fold to his bet. He has four 8's. Did I play this hand right? Should I have been betting max limit on the K high flush? Any advice would be appreciated. Thanks