My night at the Woods...3 hands long

[zepmetal]

I'm playing the $1/$2 NL ($100 max) game at foxwoods. Ive been folding around for about an orbit,then i decide to limp in with AJo. The LAG in the BB ends up playing the pot with me, and I played another hand with him a half hour later, so thats why I post this first one - to set the stage. Anyways, there are two limpers in front, and one behind, the SB completes and LAG BB checks.

HAND 1
Flop ($12): Jh, 6c, 8c
checked to me, I bet $15, LAG in BB is the only caller.
Turn ($42): 3s, (Jh, 6c, 8c)
Check to me, I bet $40.
<font color="blue"> (Maybe push here? I've only got $37 left)</font>
The river was a non-club ace and I pushed and he folded. Would anyone have played any differently? Well, on to the hand thats really giving me trouble. (BTW - as I dragged the pot, people were throwing out hands I may have had. Someone said AJ, and LAG said, no, he definitely didnt have ace jack)

HAND 2
I've got about $140 at this point, LAG has me covered by maybe $75.
LAG open raises for $7 from EP. One cold caller, and I call with TT. Button calls, SB folds.

Flop($29): Qh, 7c, 3s
LAG checks, cold-caller checks, I bet $25. Button folds, LAG calls, cold-caller folds.

Turn($79):3d, (Qh, 7c, 3s)
LAG checks, I check.

River($79): 4c, (3d, Qh, 7c, 3s)
He leads out $50, and I fold.

Is this a weak fold here? I didnt know what I was giving him credit for, exactly. Maybe he would have looked for the turn CR with AQ and missed. Maybe he was huge with QQ and the flop looked safe enough. I didnt get a better read till later on, and I saw him make some pretty loose calls, so he may have even been calling with 99 or lower. Something told me I had definitely folded the winning hand, but I wasnt sure how I could call. My night would have been a lot better with those extra chips.

And a third hand, this is quick.
HAND 3

I've just moved tables, and dont have any greats reads, but Ive been folding for more than a full orbit to a very agressive table (I later saw an UTG raise for $22 with 88!, and an MP open-raise to $20 with K8o!!!)

I get KK in the SB and only have about $80. MP raises to $7, two callers, I re-raise to $40, MP thinks for a second and pushes (he's got over 200, as do the other players who had called the $7). Folded to me, and I call with my last $40. He had aces and hit an ace. ouch. As aggressie as the table has been, there hasnt been much over-the-top preflop aggressiveness, and people certainly notice when a tight player like myself comes in raising big. So, how deep does me stack need to be to consider folding this? If I had him matched and it was another $180 to call, do I call? or look for a better spot against these overly-aggressive players? Thanks a lot.