Am I making good decisions?

[DesertCat]

Here are three key hands in my most recent B&M tournament. I haven't made the money in forever, so I'm wondering if my decision making is sub par or not.

1) I have 1700 with blinds at 100/200, still early, over 100 left with 20 paid. Player to my right limps, he's incrediably loose and lucky, has about 12k in chips after hitting all sorts of lucky flops with any two cards. I've already decided I'm going to double up through him.

He limps. I'm CO, and have K9o. Blinds are loose passive. I push.

2) I have 3500, short stack raises to 400 UTG, he has 500 left, I make it 800 from MP with black kings.

3) UTG minraises to 400. Super loose to my right cold calls. I have 2500, I make it 1000 with AKo in the SB intending to push any flop if called.