Two hands from Borgata $2500 - can I find folds here?

[MaverickUSC]

Early level 1, 25-50 12k starting stacks

Young active player that I've never seen before limps UTG. I find AA in MP and make it 175, all fold except UTG. Flop T 4 2 rainbow. Villian leads for 300, I just call.

Turn: 8 second heart. He checks, I bet 700. He makes it 2100, gut is saying to fold, but I'm really only afraid of 22, 44, or 88 here. Now what? River plan?

Hand 2: I limp ATo in pos 50-100 level, flop 4 ways AxQcTc. I have 6800 opps cover. BB bet 300, UTG+1 raise to 1100, I?

If call, what's turn/river plan?

Thanks,

Devo