C/r sucks here without a read. You "basically" turn your hand into a bluff by c/r 'ing. If he has a draw he might push (in which case you will have to fold) or if he just calls you are in the dark with a big pot and oop. Do you bet the turn to charge a draw or do you check to control the pot size in case you are up against a hand like AA/KK/set? You really don't know and will be forced to guess.

Either lead this flop or c/c.

Alt line would have been lead out for abou t3/4 and flod to raise
Leading is fine and all, but auto-folding to a raise is weak/tight. A lot of aggressive players will raise a flop donk if they raised pf. Don't give up so easily!