Additionally you haven't calculated taxes properly.

A properly structured contract would allow you to take over conttrol of the project without foreclosure by shifting the beneficial interest from the investor to you as project milestones are missed.I realize this suggestion comes a little late in the game for your current situation, so give CRR a call, but before the next time look into using a land contract.

My guess is that as long as you make all the correct repairs and pull the proper permits, it won't be an issue.

With the door open, the controls appear to work as normal (power button and cycle selection knob appear functional).  

Only a fool would attempt to defuse a bomb with simple step by step instructions without proper training.

Is it zoned properly?

Tenants have been vetted properly. 

However I do disagree with the characterization that "nothing moves quickly" - a quality rehab will go under contract quickly as long as it is priced and promoted properly.  

Finally, use all these numbers, including purchase price, repairs, rental income, expenses, and sales price or cash out refi after X number of years (you can play with these parameters) and calculate IRR on the series (can use the excel function to do this) ... this is your total return, over the life of the investment, including ALL sources of profit.

The roof was replaced by the previous owner but, I don't believe the flashing for the skylight was replaced/sealed properly.