After the flop I ALWAYS consider that if an A or K flop, SOMEONE will have paired it. You may be that someone if you play this K 5 Suited. Still you probably don't have the best hand. Again considering that someone else like3ly paired on the flop, I would have to consider my position in order to continue this hand. Most times I could NOT call much of a bet even with top pair cause of the lousy kicker.
If you're really hoping to flop the flush, don't hold your breath, you'll turn blue first.