I would like to tap that but my interest rates are super low (2.8- 4.0%) I have also considered doing a business line of credit.

Depending on the state of those facilities it could make sense to secure a renter before renovating so that you build the area out for the long term renter. 

It will be the key to most businesses moving forward operating inside of the real estate investing space.

Or do you simply have to be obsessed to even have a chance to make it in this business?

Definitely a focus area from lenders, conventional or otherwise - theres been a reported uptick in occupancy fraud or funny business lately as rates and values have continued to be so high and qualifying so tough - people are more likely to bend the rules on stuff like this - so this is generally the lender response

Could the argument be made that he had the experience because of the business he ran?...

I might have a better shot at it if build a portfolio of properties and sell them all together as a business.

A bit strange, I thought about this a bit and I didn't know if this could be signs of a sketchy scenario or if it was none of my business (besides the non-existent damage to the doors/ windows).

This will depend on the type of loan, size of the deal, experience, FICO, and property location.

I have to add my experience with Josh Cantwell & all of his businesses.