He argued it'll be paid down quicker, but I argue that I can just make extra payments on the principle if I want that and I won't need to worry about a commercial loan eating my cash flow either because it's my option as to whether I want to pay extra or not.

You don’t want a budget firm that will cut corners, but you also need to keep in mind that the management expenses eat away at your earnings.

It sucks to eat that cost but its tiny compared to what you paid for the place. 

Living in DFW prior myself I can tell you those taxes are gonna eat your cash flow for breakfast.

Particularly, taxes eating up on average 3-4 months of income every year is getting harder and harder to swallow.  

AS thats en extra expense that could eat into your investment

The difference of fair market value versus what you pay would likely be considered a gift to you, which may require the filing of a gift tax return, and would eat into their lifetime exclusion depending on the amount of the gift. 

Eat the cost of lawn service myself.2.

I don't like $850 rents on a house because a single repair can eat up months of cash flow.

That'll eat up all your cash flow each and every time it happens.