Opinions on how I played this hand good or bad.
Now its only a £5 rebuy but it was manic in the early stages and with only 11 players there was more than £600 in the prizepool and 3 places paid. We're on the bubble I have just over 18 k average is probably about 27k with two players well in front who had been very aggressive with their stacks. I am about 6k ahead of 4th place.
I am on the SB and UTG raises to 5k he is the big chip daddy in this case, in previous hands he has made large bets with rag aces and lowly suited connectors.
I the Button who was also an aggressive player passes. I push for my last 18k with

was this the right play at this point?
I was toying with flat calling and getting away from it on the flop if it wasn't a good flop for me, thinking I would still have the same ammount of chips as the BB if I had got it wrong.