what to do here

[bowski44]

able '19664737 1' Seat #3 is the button
Seat 1: elduderino (3335 in chips)
Seat 2: DP806 (3580 in chips)
Seat 3: petersenkyle (1385 in chips)
Seat 5: Smokey7730 (5200 in chips)
elduderino: posts the ante 25
DP806: posts the ante 25
petersenkyle: posts the ante 25
Smokey7730: posts the ante 25
Smokey7730: posts small blind 200
elduderino: posts big blind 400
*** HOLE CARDS ***
Dealt to elduderino [7h Ah]
DP806: raises 800 to 1200
petersenkyle: folds
Smokey7730: folds
elduderino: ????

200/400/25 ante
CO open raises to 1200 w/ 3580, folded to me in big blind w/ ~3300 and i'm dealt A7 hearts. Short stack is 1200 on the bubble, I am perceived as a maniac to this guy after pushing from sb into his big blind like 3x, he had a hand and doubled thru me everytime. He basically thinks i'm an idiot so I have 0 fold equity. He was tight earlier but how tight of a range can I give him 4 handed when he only has just under 9 BBs. Do I fold? stop and go (stack sizes give me an almost perfect pot sized bet on the flop)? Or just push for value?