A 25PL hand played badly on every street except possibly the river

[Antinome]

Poker Room skin
Pot Limit Holdem Ring game
Blinds: $0.25/$0.25
10 players
Converter

Stack sizes:
UTG: $19
UTG+1: $77.90
Hero: $86.30
MP1: $31.70
MP2: $15
MP3: $18.40
CO: $27
Button: $26.80
SB: $13
BB: $4.90

UTG+1 is solid, MP1 is very TAG, SB is weak-terrible. everyone else is donating.

Pre-flop: (10 players) Hero is UTG+2 with A[img]/images/graemlins/diamond.gif[/img] J[img]/images/graemlins/heart.gif[/img]
UTG calls, UTG+1 folds, Hero calls, MP1 folds, MP2 calls, MP3 folds, CO calls, SB (poster) checks, BB (poster) checks.

So I open limp OOP with a mediocre hand. In my defense, the only players I really worry about have folded or will fold after I enter the pot.

Flop: 7[img]/images/graemlins/diamond.gif[/img] 4[img]/images/graemlins/diamond.gif[/img] K[img]/images/graemlins/spade.gif[/img] ($1.75, 6 players)
<font color="#cc0000">SB bets $1</font>, 2 folds, Hero calls, 2 folds.

I call because this is a weak bet and I think I can take it away on the next street, and I will have position now.

Turn: Q[img]/images/graemlins/diamond.gif[/img] ($3.75, 2 players)
<font color="#cc0000">SB bets $1</font>, Hero calls.

I pick up a monster draw and get really stupid. His bet is so weak I'm sure if I raise he'll fold and I don't think I want that. How bad is this?

River: K[img]/images/graemlins/diamond.gif[/img] ($5.75, 2 players)
<font color="#cc0000">SB bets $5</font>, <font color="#cc0000">Hero raises to $11</font>, <font color="#cc0000">SB calls all-in $5.75</font>.
Uncalled bets: $0.25 returned to Hero.

So I hit my draw and villian picks up a ton of ways to make second best hand. But the board pairs. I think I did the right thing putting him all in.

Results:
Final pot: $27.25

How bad was this?