top 2 vs aggro donk

1/2 @ local underground game.
this 1/2 game plays out pretty close to a 2/5. big bets happen fairly often. standard preflop raises are 12-25. min buyin is 50, max 300

villain is a fairly aggro with a big pf range, i have 500 n change and villain has about the same. ATo in cutoff, 3 limpers i raise to 15. villain is on puck, he tanks for a while and calls, 1 limper calls. flop is A T 9 rainbow, limper checks i bet 35, villain raises to 90. limper folds. i dont give villain credit for playing 99 this fast and against this type of opponent im willing to put my stack in. at this point i think at most he has AJ so i smooth call. turn comes a 7, i lead out for 130 he pushes for 400 i instacall. river is a 4.

2 things i want an opinion on:
1. should i have 3 bet the flop?
i dont like this because im sure im beating him here and i dont want to blow him out of the pot, hes fairly passive with his draws from what ive seen so i eliminated J8.

2. check the turn hoping for a bet?
with an A in his hand i think he might actually fire large on the turn, but my flop call should let him know that i have minimum AQ. but hes probably not a thinking player anyway. also i would like an opinion on my turn bet size.