hand 1:

shove is very legitmate option against someone who is 75/35(!). that is a lot of aggression and preflop calling, so his starting hands range would put you ahead most of the time against him when you do decide to play a pot with him. LAGs don't like to make big calls like that with TPWK anymore than a TAG does so i think you can take it. it will give him something to think about next time he thinks about messing around on you, that you're willing to showdown with him. they don't like showdowns most of the time.

hand 2:

this is the classic "passive check/call flop to check/minraise turn flopped set" line. not likely he has an overpair or he'd probably just call turn too since he's so passive, too scared to raise ,not good enough to fold. he's looking for value on the minraise, he only has another $65 behind. i think he wants you to come over the top of him. this might be a blocking/floating attempt by a more aggressive or advanced opponent, but i don't think it is here.

hand 3:

PF: standard.

flop: i don't like the minraise call there at all. since you'd be next to act if you call or raise there, why not raise again now? a raise doesn't allow a scarier card to come that would kill your action while you're ahead but he doesn't know you're so strong (3 to a straight, 3rd heart, another overcard even). i would go for it there, you have to like where you're at. more likely to get a bad call on the turn.

turn: as played, push. calling and folding are worse. you might be up against a better J but tough shit if you are.