Game starts short handed and currently 7 handed. Villain is a young self proclaimed Internet player who I have played with twice since start of wsop. He is good player who gets himself into some tricky spots because he likes to play very loose/aggressively/bluffs when he thinks his opponent "can never have a big hand here". I've witness him do that twice in our prior sessions together.

Stacks:
I have $7k and villian has $5.5k

Pre flop:$85
I open steal A6 in the CO to $200. New French player calls in SB and Villian overcalls in BB. I believe his over calling range here is quite wide.

Flop:$610
Q84
Check, check, and I check behind

Turn:$610
Q84A
SB checks, BB checks, I bet 400
SB folds, BB c/r to 1400

I immedetely flag this as the type of spot he likes to make a move. I suspect he knows my stealing range wide and I would never check back this spot with a set or made flush hoping to get 3 streets of value. His check raise hopes to blow me off my bluff of this ace or any weak medium strength hand I have if he fires big on the river.
I know folding here is not an option for me and decide whether there is more value in calling or raising. If I raise it's most likely an allin and I am getting value from his big draws he calls with. If I just call and let him bluff the river I am often will get more value. I put his turn bluffing range here as mostly pairs with a flush draw or something like that. I plan to call turn and call again on most non- rivers and re-evaluate the rest.

River:$3410
Q84AK
BB slightly overbet ships for about $4100

His small overset shove kind of throws me off because I expect him to bluff with a smaller size of maybe 2200-3000 because that is small enough to accomplish the same result and save him ~1500 if called. Has he made 2 pair with KhQx? Probably not because I expect him to squeeze his BB vs my steal PF. Has he made JT for a straight he was semi bluffing on the turn? I decide his range PF is simply to wide and he would never check twice with a set or small flush at risk of losing value and giving free cards. I stick to my plan and call.

Any thing I am missing here in my reasoning ?

jamming turn seems really bad... I think i'd be folding to the turn c/r but you seem to have a read that indicates you shouldnt. also i fold pre but maybe thats too nitty. if i expect the villain to be playing back a lot and also playing well i'd prefer not to have a6o even in position

Betting the turn vs this type of player is a huge mistake unless you are inducing so I guess you got what you wanted.

I prefer 125-150 here pre with these eff stacks. As played clearly read dependent. Betting turn seems pretty optional, as played I guess you have to go with your read.

I would fold river though, you rarely see overbet river bluffs. Although I usually play at the 5-10 level so not sure about tendencies at this stake.

All this could have been avoided with a turn check. You have postition, but a weak kicker + weak draw = check. I'd want to see the river, and you face a shove, fold most of the time.

+1.

Definetly a fml call spot, he could easily have a monster here even with the check flop and turn. I'd rather bet flop than turn here, although I am pretty sure villian would still c/r you. Hand would be super sick if villian shows up with naked A.
Also turn raise might be worse than folding.

Fold to turn raise. Snapfold to river shove.

Is it really the same result with both bets? it sounds like you insta-call $3k but now you're unsure about calling an all-in.

What can he have that you beat? Kx? T8x? Honestly it feels like your best scenario is a chop against something like A3x, but why would he bet that on the river. Probably I'd fold and wait for him to make the same play when you're stronger.

Bet flop.

Fold to turn raise imo. Also I don't think the turn is a check.