My options at that time would be to sell it when the renter moves out. 

It will cost you more in the long run in terms of money, time and stress...not worth it. 

She was consuming half of our time, and we were both miserable.

The reality is that the Gross S8 Rent amount on an S8 voucher includes all utilities.

I would have a contractor price out the flooring, a lot of times they have discounts at wholesaling floor companies that you can get a better price with..

Working full time and investing in real estate is pretty normal. 

You'll need to get good at analyzing rehab costs and predicting after-repair value (ARV) to ensure your margins are solid.To get started, immerse yourself in real estate education—read books, listen to podcasts, and use BiggerPockets to connect with experienced investors.

If you think it's going to drop if the fed cuts 5-7 times in the next year, it might make sense to look at an ARM with a 3 year declining PPP instead. 

A Recovery Residence that claims to offer services should be classified as a Residential Treatment Center-which includes staff and usually medical personnel. 

Start by reading the Ultimate Real Estate Investing Guide: https://www.biggerpockets.com/guides/ultimate-real-estate-investing-guide/introduction2.