If he's aggro, then a blocking bet wont do much imo. If he has a J he's raising, and a blocking bets just makes you less money vs hands you already beat (as opposed to a straight vbet).

Pre: Consider betting more like $.30 since you are oop and you have a station in the BB.

On flop, if he's that aggro he'll raise if he gets a decent piece.
I dont see the point in trying to be tricky. This is a flop that either hits them or it doesnt (Pairs, sd's, 2pair etc). Just bet! 3/4 is great. They will pay to hit their draw.

By then another 3/4 bet on turn prob has you comitted, or even consider shoving the turn with the amount that could have been in there.

Thats my thought