A/Q Sooooooted, Troublesome hand

[jrforman]

5/10 NL Bodog, 8 handed

Villain has ~$1,000
Hero has him covered

Villain over the past couple of days has been playing super donkish, calling down a lot of bets and losing...Seems to be playing a little more solid this session, but has only sat down for 5-6 orbits.

Villain raises to 50 UTG+1 to 50...standard raise for him, little high for the game...I call behind with A/Q spades

(115) Ad th 4s...Villain bets 60, hero calls 60
(235) Ad th 4s 5s...Villain checks, hero..?

Interested in all streets, but if you favor betting the turn, what's your plan for the river if I whiff on the flush. Thanks in advance all.