Looks like you are more or less breaking even with 800K worth of debt. 

Reduces your availability on your credit profile and increases your debt load.

As a result, I want to lay out a scenario I hope to create (let's assume I can create the scenario below) and I am asking feedback on all of the things that could go wrong that I should anticipate/prepare for: Scenario:5 fourplex properties = 20 units (average $900/month rent) - Looking for cash flow not necessarily appreciation for these properties$1.5MM in investment property debt (Average purchase price $300K; Market Value $400K)$500,000 equity across properties (Average $100K)Loans: Conventional fixed rate or seller financing fixed rateRental Income: $18,000Mortgage for all properties monthly: $10,000Cash Reserves on hand: $200,000 (separate from the equity in the properties)Reason for Scenario: My purpose in stepping away from a full-time job would be to start ramping up flips to pay down the mortgages over time.

The only answer here is you have lost 6 months  where you could have used your RE licence to build capital.No capital - The only answer is you need capital  (ie income, ie a job)  eliminate your debt,  build capital.Get out and earn and learn

And Marcus is correct, you are probably signing on a loan where you are still personally liable for the debt so the LLC isn't much help. 

http://findhoalaw.com/code-of-civil-procedure-section-325-adverse-possession/Your mother is not required to do anything.  

In the same year I've remodeled 2 other units and have some debt because of the 3 remodels.

@Page WeilDTI is calculated as total liabilities (normally those reported on your credit report unless some debts do not show such as additional mortgages) divided by your total verfiable income.

When the closing entity simply holds your money in their escrow account after closing you are deemed to have constructive receipt (meaning control if not possession) of the money. 

You can get fairly good returns through mortgage notes / promissory notes and can get creative with being a debt partner or equity partner.