So any help, advice, or guidance will be extremely appreciated. 

Someone that is pushed to that extreme on light bullying is very sick and the sickness was the culprit.  

Go to Etsy and search for "rental property tracker," and you will find hundreds of nice spreadsheets to track 10-20 rentals, usually for under $10.Software has extremely helpful features like online payments, marketing syndication (click a button, and your property is advertised on multiple sites), electronic document review/signing, maintenance tracking, and owner reports.

You must tread extremely carefully. 

Am I being too extreme or is this normal for a land lord to evict a tenant solely based on excessively late rent3.

Go to Etsy and search for "rental property tracker," and you will find hundreds of nice spreadsheets to track 10-20 rentals, usually for under $10.Software has extremely helpful features like online payments, marketing syndication (click a button, and your property is advertised on multiple sites), electronic document review/signing, maintenance tracking, and owner reports.

The Panama City market has been sliding forever thus why I never recommend buying much in the city except if you want to move here (still...renting makes more sense at the moment)Investing in the city really only comes down to doing a STR business based either on leverage or co-hosting models as rents are extremely low and there is SO MANY apartments and houses that are empty, doing nothing for 2 or more years.

After seeing my borrowers numbers, the cashflow is extremely good.2) Yes!

I think you have found a way that works, but if holding that debt is extremely expensive it may not be worth it. 

One disadvantage of mini-splits is their inability to work effectively at extreme low temps, which we are bound to get a handful of times in Chicago.