1) You should only fold really if you strongly suspect he's got a 4 - as then your draw has much less value here (full house poss)- but since hes not an agg oop kinda guy then why suspect him of a 4 judjing by his pf actions? call, he'll probably crap himself if an overcard falls anyway, then you get a free card. no value in raising btw

2)its quite close i think he could easily just have plain overs. my foolishness wants me to raise hehe