Alright, this is a hand I played a while ago.  I stroke out my actual hand so that this can be a range question. 

Villain is quite laggy and aggro pre and flop, but shuts down reasonably often once his flop c-bet gets called.  I have been playing fairly solid and nothing too crazy, I think I have just won 1-2 standard flips so far.

BB: €50.63

UTG: €55.57

Hero (CO): €133.50

BTN: €268.42

SB: €114.09

SB posts SB €0.25, BB posts BB €0.50

Pre Flop: (pot: €0.75) Hero has ??

fold, Hero raises to €1.50, BTN calls €1.50, fold, fold

Flop : (€3.75, 2 players) 7c 3d 4h

Hero checks, BTN bets €2.62, Hero calls €2.62

Turn : (€8.99, 2 players) Ac

Hero checks, BTN bets €6.29, Hero calls €6.29

River : (€21.57, 2 players) Jc

Hero checks, BTN bets €17.50, Hero raises to €52.00, BTN 

Q1) Would hero have bluffs in this spot? 

Q2) If you were villain, what would your river betting range look like?  Would you still value bet with a non-flush 65?

Q3) As played, what would be the weakest hand you bet/call in villain's shoes?

I will post my thoughts later on, thanks!