Is this an okay spot to bluff?

[Trikkur]

Villain is 21/19/2 over 100 hands. I knew I was going to have to fire 2 barrels when I bet the turn, but I was pretty sure he was folding KK or JJ every time. Is this ok?

Full Tilt Poker Game #3907426731: Table Amistad (6 max) - $1/$2 - No Limit Hold'em - 22:46:40 ET - 2007/10/19
Seat 1: EnneirdA ($179)
Seat 2: ablslucky7 ($99.45)
Seat 3: CptTomFranklin ($228.60)
Seat 4: youngun999 ($78.95)
Seat 5: IgotTRIKZ ($268.25)
Seat 6: murph345 ($380.25)
CptTomFranklin posts the small blind of $1
youngun999 posts the big blind of $2
The button is in seat #2
*** HOLE CARDS ***
Dealt to IgotTRIKZ [Th Td]
IgotTRIKZ raises to $7
murph345 raises to $24
EnneirdA folds
ablslucky7 folds
CptTomFranklin folds
youngun999 folds
IgotTRIKZ calls $17
*** FLOP *** [Ac 3s 8c]
IgotTRIKZ checks
murph345 checks
*** TURN *** [Ac 3s 8c] [Qs]
IgotTRIKZ bets $34
murph345 has 15 seconds left to act
murph345 calls $34
*** RIVER *** [Ac 3s 8c Qs] [9s]
IgotTRIKZ bets $70

[thac]

Meh, when he calls the turn.. I don't really like it anymore. It seems like if he was folding KK he was doing it on the turn. I guess it's alright some of the time though.