Is an all-in counter-productive here?

[MonkeeMan]

Just after the first break, 450/1559 left. Blinds are 100/200, I'm in the SB with 1600 after posting. UTG, MP2 and Button limp, I call with Kh8s getting 9:1 and BB checks.

Flop is 6hKd2d. I didn't like the flush draw with 4 villians and figured there was a very good chance I was ahead here, so I push my last 1500 into the 1000 pot. Is this correct or is a bet of around 600 a better idea?

On the one hand a bet of 600 allows me to have some folding equity with a 900 bet if a blank falls on the turn, on the other it affords 2nd callers proper odds to chase their flush.