i think there are two routes to go down now.
1) limp coz the situation reflects heads up play. he can check or raise. then u bet out at the flop for a probe bet hope he comes along for the ride. if he doesnt come along it was never ment to be.
2) raise 3xbb to find out if he wants to play a marginal hand given u may have robbed some of his blinds earlier. then u can toast him.

i like the limp given its Blind vs blind here, HoH also agrees with this idea.

after the flop try get as much in a possible.