Typically note owners are able to offer something called a "deed-in-lieu" (DIL) of foreclosure that allows you to sign over the deed and walk away from the house and the remainder of the debt instead of losing it to a full foreclosure depending upon the circumstances.

Try to use the spreadsheet as a baseline to get started, then understand where all the numbers comes from and customize it for your circumstance.

I realize with one property its simple, but I want to have a system in place as my properties grow, so I don't become overwhelmed and disorganized, and end up neglecting things. 

If they neglect to reciprocate, then it might be time for new tenants.

I'm looking at a couple of 30 unit apartments that have been poorly managed and neglected for some years.

I'm thinking this won't help me either as special circumstances required for discharging liens generally, but just thought I'd mention.  

Matching under a property insurance contract varies by state and often depends on the specific facts and circumstances of the particular case.

Always best to get competent professional advice n your particular lease/circumstance. 

Whether or not the LLC is in the business of making loans depends on the facts and circumstances of your specific situation. 

Speak to your tax or legal advisor about your specific circumstances.