I'm with lukie. Hell, just push KK, it usually works out for the best. It certainly wins money.

I'm playing all of those situations to a flop except #3. I don't like AQ after a reraise one bit. I can't quote odds, but I don't think you're even going to make money when you flop an ace. It's tricky, hard to bet like you have the best hand, you're out of position...I hate AQ here. And I refuse to get destacked with AQ unless I make a boat or the nut straight and then get sucked out, so I play it pretty timidly. I fold. (Unless it's Absolute .5/.10 NL, I might push then ;p )

Also with the suited connectors...I'm not calling 6BB, but a raise to 4xBB is very callable.

#4 is also kind of tricky, I think read-dependant. I'm usually calling and looking to hit a flop nicely, or a safe flop with the pairs and seeing how the player responds to a check-raise or (less seldom) me betting into him.

#6 is definitely a steal situation, just be careful if you get called and hit your ace.

Most players agree all the money comes in post-flop anyway. None of these situations are going to lose you much.