[Q..]

I guess readless you played fine.

I would consider a 2200 reraise preflop though, it wouldn't really cripple us and if he pushes we might decide that we are beat or still call, at least we'll know that he pushed over our reraise of his big stack so if hes smart hell understand we got smth like 99+,AK , and get to preflop shove situation but with more information, and probably against a little worse hands. I really dislike preflop shove idea since, TT shouldn't be big favourite against hes range here, readless again, and it would really increase our variance.

As for the question about what if he leads all unders flop well, by calling pre we didn't gain any information , and we can shove/fold like preflop, but with much better pot odds and probably favorable situation, thats why i think we got to raise here pre, so we dont have to play our tens like 22 postflop.
We really would like to avoid confrontations with big stack but TT is too good ~4 handed i guess.. Tough spot.