You will need to ensure that your lease is state-specific residential lease agreement.  

That ensures you don't spend it on other things and that you know exactly how much you have available to spend on the next purchase.

I think you've got most of the salient points covered, understand the laws, use a legal lease in your state, then follow all of the rules and timelines as per the lease to ensure it's valid.    

Instead, IMO, separate your assets into different LLCs to act as a safety net, and ensure they aren’t able to obtain all of your real estate investments or company assets.

All rents are severely below market.My goal here is to understand how much latitude I have during the stabilization process, and to ensure that I don't give up flexibility during the estoppel process.Thanks,Christopher M.

This is remarkable to think no one knew or saw squatters since they had been charging me to do home visits, lawn repair, etc. to ensure everything was ok.

Ensure that the roof and HVAC life expectancy is figured in.If you purchase a $1,050/mo rental for $85k, you'll have $17k in the down payment and a mortgage for the remaining, $68k.

Not a big deal you'll just need to add some additional self leveler to ensure the cracks are covered before you put down the flooring. 

While it will not answer your question directly, it should provide some context of why people are telling you that you are discriminating, below is the link:https://www.biggerpockets.com/blog/2013-01-27-tenant-screeningBe sure to check with your State and local laws to ensure compliance to your fair housing standards.

Whenever you are buying a property out of state you should do a few things to ensure it's as smooth as possible.Don't buy in the roughest neighborhood in the urban core.