I do have some money that I need to pay myself back from my current property from renovations.

It's not net negative if you are living for less than you would pay for rent...and PS, you wouldn't be earning appreciation or any cash flow on that either.

Earning 25% is better than paying down a 5% mortgage. 

Hi Niece, I'd suggest you get involved with other like minded folks at your local real estate group.

One unit is occupied by a low-income senior not on the Housing Choice Voucher program and paying well below market rent.

From a $ perspective you get the same amount of appreciation, depreciation, loan pay down, but here you have cashflow and if if a tenant moves out, you are only 50% vacant instead of 100% vacant.- Generally the same logic applies as above.  

I love where you mind is at and how organized your post/plan is.

A legend in my own mind, my friend!

I found it far more valuable than the AirDNA one result, albeit you do have to pay for the pricelabs revenue estimator. 

You’ll probably pay a higher sales price and a higher interest rate as well.