villain is 23/0 after 23 hands. It's fastforward hand and given how these games play, I'm assuming that he almost never shoves worse if I check to him. 

Combos that beat me: 57s (4), 57o (let's say half of them?? I don't know how often does he flat pre, so 6), 44 66 88 JJ (8) and random 8xdd hands....let's say 85dd+, which makes 7 combos. J8 (4) (Total of ~29 combos

Combos that I should get value out of: J9, JT, QJ, KJ (8 combos each, 4*8=32) (this is fairly optimistic) +some unquantifiable equity from the fact, that he dost sometimes ship missed draws+occasional herocalls from 99/TT.

Now, I think that the first range is somewhat pessimistic and the second one is somewhat optimistic....but it looks like marginally ok shove. 

Am I wrong? Am I'm approaching the analysis correctly?

Thank you guys