Umm first off, I never limp UTG and I absolutely never limp UTG with K10s. It's either a raise or fold but since you now decide to just call and there is a raise and a 3 bet before it's your turn again, I would fold here.

Nothing else to say about the other streets, its just to press the raise button.

I check behind or call the river. That Q probably made someone a Full House since AA, JJ or AQ isn't impossible at all.

I think you are definately ahead of MP2 since his betting pattern don't tell me AA, JJ or AQ. With his last few remaining chips he would 3-bet the turn. I think he had his mind to go all the way this hand after the flop because he dont have so much chips left. He can have anything but I sense weekness in the turn call, we are ahead of him.

Check/Call or check behind on the river even tho I am interested in making a bet if he checks to me since I think we are ahead of MP2.