77 in 2/4 NL, how was my play, particularly the turn?

[CrosbyBird]

First, the hand:

PokerStars No-Limit Hold'em, $4 BB (8 handed) converter

MP2 ($1068.75)
CO ($246.30)
Button ($194.45)
Hero ($314.50)
BB ($212.75)
UTG ($86.25)
UTG+1 ($119.80)
MP1 ($916.25)

Preflop: Hero is SB with 7[img]/images/graemlins/heart.gif[/img], 7[img]/images/graemlins/spade.gif[/img].
<font color="#CC3333">UTG raises to $8</font>, UTG+1 calls $8, <font color="#666666">2 folds</font>, CO calls $8, <font color="#666666">1 fold</font>, Hero calls $6, <font color="#666666">1 fold</font>.

Flop: ($36) A[img]/images/graemlins/heart.gif[/img], T[img]/images/graemlins/heart.gif[/img], 7[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">Hero bets $12</font>, UTG folds, UTG+1 calls $12, CO folds.

Turn: ($60) T[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, UTG+1 checks.

River: ($60) 8[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $12</font>, <font color="#CC3333">UTG+1 raises to $24</font>, <font color="#CC3333">Hero raises to $52</font>, UTG+1 calls $28.

Final Pot: $164

My table image is pretty close to super-rock. I have been here for over an hour and I tend to take down pots with no showdown. Generally, players tending to overlimp, and signify strong draws or PP with standard 3xBB bets. It's working against me a little on my big hands because most bets from me are usually met with a fast fold, but when I miss or hit light, it's comforting to be able to drive off people.

So....

Pre-flop, I'm limping for set value. I plan to bail if I don't hit my 7 unless the flop is full of garbage or something like 568r.

On the flop, I figure a bet might look like either an A or on the draw for the flush. I don't want 4 guys in the pot here because there's enough possibilities with straight and flush out there. I get the one caller I think I want.

On the turn, I figure checking sets up a river bet. I'm not too afraid of AT or TT here... I figure either gets a bigger bet pre-flop. A bet here is going to take the pot down, I'm nearly certain, but I think I can get more, especially if he's on a flush draw.

River, I'm feigning a busted flush draw with a small bet. He min-raises, which looks like the 8 helped him, but I don't think he's sitting 88 because he'd have likely raised preflop rather than called. I want to bet something, but not so much that he won't call. I don't know why I chose exactly $28 as the ultimate raise... I just hit the slider a few times.

Villain had <font color="white">Ac8c, and MHIG.</font>

I think my play is okay here, but I wonder about the turn and how to come up with a better feel for how much to go on the river.