We are getting less than 2-1 on the flop with at most ten outs, but we really have no idea how clean any of them are. There are very few 5x hands in his range, and we only beat Axhh (assuming it's not the 6h). We pretty much have a straight draw but what kind of implied odds are we getting? How likely is he to stack off on the turn with a a board of 6543, 6432, or 7643? This could also be TT-QQ so I dunno. We have ~37% equity against a range of sets, AhKh and QQ-TT so I guess you could just stick it in.