Too Weak?

[lil feller]

B&M 20/40 with a full kill. This is not a kill pot.

UTG is a major LAG with very low PFR standards. MP1 is a loose passive fish whose cold calling standards are what you would expect from such a player. I'm on the button.

UTG raises...he does that alot. MP1 Cold calls. He does that alot. Folded to me and I 3bet w/ ATo (?). Both blinds fold, others call. Three of us.

Flop:

A-K-9 rainbow.

Check/check/bet/call/call.

Turn
Js (makes a spade draw possible).

When this card hit MP1 had a definate reaction to it. The reaction could have ranged from picking up a flush draw to making a straight, but he definately liked that card.

Checked around.

River
xS (puts 3 spades on the board)

check/check/hero...

Three questions.

1. Is preflop as standard as I think it is, given the likely ranges of the opponents?

2. How horrible is the turn check? I really wasn't sure if I was drawing or not, but figured if I got raised I had to call. Is this one of those spots where its right to check with outs/position or should I have bet?

3. Whats the best river line?

Thanks,

lf