200NL: Ace high on river, fold, call or raise?

[peyote_sandwich]

No Limit Holdem Ring game
Blinds: $1/$2
6 players

Reads:

UTG is 43/5 from 80 hands. Loose and passive, no outstanding donkishness witnessed yet.
Hero is 21/16 TAG

Stack sizes:

SB: $150
BB: $200
UTG: $200
HERO: $230
BTN: $230

Pre-flop: (6 players) hero is MP with A[img]/images/graemlins/club.gif[/img] Q[img]/images/graemlins/club.gif[/img]
fold, hero raises to $6, CO folds, Button folds, SB calls, BB folds.

Flop: 7[img]/images/graemlins/club.gif[/img] 8[img]/images/graemlins/diamond.gif[/img] J[img]/images/graemlins/diamond.gif[/img] ($14, 2 players)
SB checks, hero bets $6, SB minraises to $12, hero calls.

Turn: T[img]/images/graemlins/heart.gif[/img] ($38, 2 players)
check, check

River: 3[img]/images/graemlins/spade.gif[/img] ($38, 2 players)
SB bets $9, hero ...?

Please specify frequency if you think it is useful. e.g. if you would like to raise 20% of time, fold the rest etc.

Preflop I'm experimenting with 3bb as a standard opening size (a little smaller than I used to). Flop c-bet I mix fairly evenly between 40% PSB and 85% PSB (i.e. I would bet nearer pot about half the time I c-bet here). Terrible? Ok? Radical?

Folding to the min-raise is probably good, but if I'm calling its with the intention of being willing to take a stab later if things work out for that. I expect him to have me beat nearly always at this stage.

Thanks for your feedback.