Is MP1 loose enough to cold call a raise w/ KQ? I think 2 ppl calling your flop raise pretty much says your beat. Unless these guys have a habit of calling w/ mediocre hands. But definitely check behind and reevaluate on the river. If I miss the flush I'd probably fold to a large bet, because what would they be betting that's worse than QK? If I hit the flush and someone bet big...then I have no clue. Try to find a cheap showdown if at all possible.