Id bet that flop harder, and given those stats I am going to call. Even though its only after 38 hands, he is still decidely loose aggressive and I wouldnt give him much credit here. I wouldnt really be too worried about a set, except for maybe TT, I think AT is a definite posibility, but I feel against this players range we are ahead more often than not. Also, top off to $10 preflop.