Opinion, please?

[vexvelour]

Just won a STT but am questioning some of my hands. I would like to know how you guys feel about certain hands in certain positions at one of these tables. How would you suggest playing these hands against certain types of players, mostly LAGs and TAGs.

NL single table, I'm in the chiplead for most of the game because I doubled up early and gradually grew. We're down to 4 people for each of these hands, and blinds have become 200/400. All players have a knack for mixing up their play pretty well.

1. KK on the button (don't want to scare them away..)
2. Ax heads up when everyone else has folded. (Smallish all in bet to you)
3. Hi-Lo suited cards, K9, Q8, J7...no super low cards like 3s or 4s. (Late position)
4. Suited connectors, when a raise is out there. (any position)

I feel that while most of these cards are not great (ex. KK), in such a shorthanded situation and one player on slight tilt for a part of the game, some would be possible. I folded most #2-4's, but I feel that perhaps I was a bit too tight. Thanks for your time guys, I appreciate it.