[Romulus141]

Why not check-raise the flop? Enormous equity, UTG is acting like a maniac, and both the button and UTG will probably come to the turn with you. Button has cold-called, but maybe he just has a set of sixes or a middle pocket pair, or something like KJs of diamonds and is raising for a free card (if he's a good player or something), or he just has ATo or KTo and is being aggro with top pair. I think you're ahead on the flop by a huge margin, so I'd get the money in now.

After that, as you did, I'd donk out the turn. I'd 3-bet the button if he raises me, because I'm not convinced that he has a set of tens.

I'm still betting this river. I'll call a raise, because then I can't discount the possibility of a flush, although our villian may have just had a lower set of his own or was getting over-aggro with top pair. I can't find a fold if I'm raised on the river, it's too likely the villian can have a lot of hands we beat.