There are lot of people here which saw and understood the source code so paying one guy just because he has deal with exchange is like extortion which will never help.
The point is we shouldn't dance as they play music because they will steal all from us, idea, money, time, nerves etc...
If many people already saw code why hide from a real code review? Big exchange wont happen if you wont do there dance. So stop thinking big exchange it wont happen.
We can reach out to earlz for a code review. He has reviewed coin code for Bittrex. This might help the cause of being listed if he does the review. I am not sure of he charges, but I know he is pretty respected for his dev work and code reviews. He is usually in the #Bittrex IRC.