When they get asked about their SOW and Contract and what do they say....they usually admit they have neither of these....And partially kidding I must take offense with one thing you said:"Every SOW should do the all important job of holding your general contractor and subcontractors accountable."

@Paul Sandhu No offense taken Paul.

Also dont take offense to this but I dont think many sellers would take a 15 year old seriously as a wholesaler. 

If your DTI is high, it can make your global DSCR look bad, but some lenders only look at the DSCR on a given property.

No need to be offensive.

From what I gather, its been ran less like a business in the past and that's what the tenants are used to, which means if you take it over, they will continue with that expectation, whereas it sounds like you want to run this like an actual business (no offense to your family). 

It isn't something you would do on a first offense if you catch my meaning. 

Actually early on in my investing I made a number of mistakes just like this.No offense, but you probably messed up the screening which started the problem.

No offense to anyone but this is one of those issues where the OP should only be taking advice from experienced and local folks.

Every story / transaction is different but here are some general guidelines.Most banks will look at your global cash flow and take your primary and other sources of income (as well as other liabilities) into consideration.Most non-bank lenders will look at the subject property’s cash flow available for debt service to determine how much of a loan that property would support.