(50h) 31/25/1.2/50 / 3bet 9/

Only 50 hands on this guy. Seems to be pretty lagy and sd bound, but again 50 hands...
Flop can be fired? What to do next?
I took passive line. I would like as is that river is good for bluffing and if so,what sizing chose?
It hits his range, mine could as well. Pp won't fold, Ahi probably, but how many aces could he have? Few, lot will 3bet preflop, some offsuited low aces will probably fold.
... I think x fold, what about you guys?