They just want to make sure it's safe and livable. 

And also keep a nice chunk of change in reserves or very safe short term investments.

I've started doing some renovations on each property and have so far just ran everything through the 1 business credit card and business bank account -- keeping track of all of my invoices, etc.Even after I split up the properties into their own LLC's, is it safe to continue doing things this way?

Unlike doorloop which I use some features are not available for mobile devices.

The one thing I can say is a safe bet is getting long BTC. 

What would be safe neighbourhoods, reasonably priced and investor/ rental friendly.

Simply safe

Tenant shall have abandoned or surrendered the Premises if Tenant turns in all keys or access devices regardless of whether rent is paid or not. 

For argument's sake, and to keep the math simple, let's say you have $1 Million in ETF's or some other safe-ish, well-diversified assets.Step 1:  Take out an SBLOC (Security backed line of credit) on said portfolio. 

While we are not truly concerned with making it someones dream home, we do want it to be smooth/safe with a modest level of eye appeal and without a massive time or money investment.