Slow playing KK at final table short stacked

[DiceDominator]

I read the guidelines and hope I am posting this correctly. I am a craps and blackjack player that has been studying and playing poker for 1 year now since I can’t play my other advantage games at many casinos any more.

Full Tilt $69 + $6 MTT, 9 player table. I am at the final table with 8 players left. I am on the button with the short stack at the table with $48000 in chips; blinds are $6000 and $3000. Small blind has $100,000 and BB has $170,000. SB and BB have folded their blinds in the past.

I am dealt KK and everyone folds to me. My decision is either to slow play with a small raise or going all in and to take down the blinds which I thought would happen if I went all in. I decide to slow play and raise 2X the BB. SB calls and BB folds. The flop is A with two clubs and one of my K’s is a club. I move all in as I don’t read that the SB had an A. SB calls and I am right he doesn’t have an A but has two clubs and beats me with a flush.

Question, would you more knowledgeable players have slowed played or gone all in?

Thanks for your impute and if I posted this wrong please let me know.

Dominator