Meanwhile, since September of 2017, we've been aggressively paying down our debt. 

You could record an option if seller chose to wait to dispose after tenant moves to kill your competition.I can't answer your sub2 question without know all about debt. 

There is no information or address that gives me a lead on the ownership.

That's def a lead!

I will trade you a 1% multi lead for a couple smaller fixer-upper leads.

The main advantage purchasing an existing facility provides is some income while you are stabilizing the property; even if the owner only has 30% occupancy, that's better than starting from scratch with debt service payments.

You can also offer debt + equity payoffs in a syndication.

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We do not want to get back into debt after that so we are talking about working in cash. 

Do your best to ascertain whether or not there is an oil tank, lead paint, asbestos, or other potential contaminants that can become personal liability even if the property is held in an LLC.