This fold been bugging me

Live $70+15 (w/ another $5 for 300 chips added on before play starts) at TS. 189 entrants. First pays about $3.5k and 9th-16th all pay $198. We are on the bubble and I am sitting with a below average stack of 14k in the SB and blinds 2k/4k. BB has me covered.

Big stack who just moved to the table open min-raises from the button to 8k. I look down at AQo and decide to fold, leaving myself with 12k left. My reasoning was that the bigstack was surely going to call the 6k more for my all in, and in all likelyhood it would be a race, with my tourney life on the line, not to mention the BB left to act behind me. Was this fold giving up to much, considering the payout structure was a bit on the heavy side for the final table?