I work 3rd shift and usually turn my phone off when I sleep during the day and this morning he FINALLY came to the realization that I want him to just make decisions about everything if I’m not available.

While a detailed log is often sufficient, adding additional documentation can strengthen your record. 

But, something to add that you have to understand is that a 3-4 unit has to be meet the FHA self sufficiency test.

I need to ensure that the rent-to price ratio will sufficiently cash flow as I intend to hold at least 5-years before acquiring any other real estate.  

You need the type of attorney that the boogeyman checks under his bed for at night before he goes to sleep, and may need to offer 35 to 40% contingency fee.

She may be getting alimony payments sufficient to allow her to qualify on her own.

Not sufficient for individuals' identification always, though.

Instead he/she claims that his/her invoice is sufficient.

You have the problem common to a lot of people getting started; wanting to invest but lacking sufficient capital.  

I would not be able to sleep at night regardless of what the agreement said.