Its also possible that the tenant already left, you might want someone to check to see if they are even still there.  

Even though there is only a 6 month redemption period, the previous owner could potentially contest that the tax sale never should have taken place.

It might not even be worth it at this time.

Even though he moved out, if he signed the lease, he is still responsible for the rent until the lease expires. 3.

I am even fine with them touching a toy or two, but it was the getting into the bed (with shoes on) and bouncing around and throwing toys is what shocked and bothered me the most.

However, a way to make this even simpler would be to just use a lender that can qualify the rental income with AirDNA projections so that you don't even have to go through this exercise and aren't at the mercy of what the appraiser is/isn't willing to do.

Is a lender even willing to fund this?

Great, i had very little money upfront ( of course that was 20+ years ago ) and with me being a contractor did all the work myself on weekends and evenings. 

24 months ago it was harder to find folks doing these smaller loans.Today it's much easier because lending volume is down so much.I even had a loan officer I used to work with call me the other week.

And, that's why I would BEG you not to buy a property that just "breaks even!"