Also if I am missing anything please add it in as a new metric!

If that is the case with this property you will have to determine if the septic system can handle the additional bedrooms.  

(These averages represent state-level data, and individual cities may levy additional taxes.)To achieve the same level of cash flow as a property in Nevada, you would need to generate a higher cash flow in Texas and Florida to offset the higher operating costs.Texas: The property must generate $5,752 ($9,256 - $3,504) more cash flow annually to compensate for the higher operating costs.Florida: The property must generate $2,343 ($5,847 - $3,504) more cash annually to compensate for the higher operating costs.Overhead costs can greatly affect cash flow.

Additionally, while reporting these units, I should mention them as individual units, i.e., 123 Main St Upper [STR] and 123 Main St Lower [LTR].

Run a credit/screening report on yourself.

You should first be concerned about the return of your investment before the return on your investment.Part of that includes being added as an additional insured as a lien holder.

Possible buy doubles to sell on terms for additional cash-flow.

If multiple lenders hit my credit report at the same time [during the same week] will it be considered a single credit pull or multiple hits?

A lot of the time it depends on the actual credit score, the age of your credit, or the inquiries/events shown on your credit report. 

Does it look at all 3 credit bureaus?