Should I have folded on the turn??

[seabass]

$1/2 NLH Game at Caesars Las Vegas.

Me: about $300
Villain: About $400

I am on bb with 4 5 of clubs. 3 limpers, villain makes it $10 to go. I call, 3 limpers call.

Flop: A 2 3 rainbow

I bet $20. Limpers fold, villain calls.

Turn: A

I bet $70. Villain calls

I'm putting the guy on a big A. Waiting for the river, if its not a A,K,Q,J or 10. I am planning on going all in for the last $200.

River: 8 off suite

I go all in, he insta-calls with pocket As, for quads!



Question: Should I have gotten away from the hand on the turn, when the board paired. I think I would have gotten away from it if I had had $20,000 (i.e. large stack).

Thoughts????