I think T7s is really too bad to play a 3-way pot with, especially without the preflop lead, so I think fold > limp. And as Cocco said, the blinds will be taxing us with a very wide range.

I think vs a fish with a 40% range, in position, with the preflop lead, this is going to be a slightly +EV play.

I did shove here, but I think it's very close. If the board was rainbow I think this would be a very standard fold. It feels retarded to play T7s and then fold it when both cards pair, but bottom two is never going to dominate a hand that has raised and reraised.