I want to do the math exercise and so I guess I am asking if anyone with a little experience can guide me to what to ask and how to figure it in to see if it is a DEAL or NO DEAL.

This is not taking in account all of the physical labor I put in.

The court will side with the tenant with the thinking that your continuation of the lease by not exercising your option to evict over unpaid fees constitutes you having waived them.  

My schedule is flexible Friday-Sunday to physically be on site at a location.

Normal ways is 401k and Social Security, and that's after decades of work and that's when your physically unable to work What kind of retirement can you enjoy when your 65yo?

You should not be physically involved in the closing at all.

I am wondering how one can manage that w/o being physically present on site.  

Individuals attempting to circumvent the listing agent quickly get into trouble and the agents start giving instructions to ignore you or refer you to an agent,Zillow & Loopnet are other sources but other than the physical location, the data should be held suspect

There is no difference in physical layout.

Just set up your lease, so the tenants pay via direct deposit - either electronically or physically at the bank.