Primarily rented to military- never had a problem, required to end lease or evict. 

that we’ve learned in our 24 years, managing almost 700 doors across the Metro Detroit area, including almost 100 S8 leases.

If you want it to be a business name, then I recommend you set up an LLC, transfer ownership to the LLC, and then change your leases to match the new owner name.What is your reasoning?

only the appreciation gained during the leasing period?

Their lease is up end of day today and I was just at the house- there is no way all their stuff is going to be moved out by EOD.

Just add the Tenant's Rights and Responsiblities to the end of your lease and have them sign both at the same time.

In August he switched to paying 50% to 75% of rent due and stopped communicating. its a month to month lease so i had to give 30 days.

I know I need to learn all local regulations, why the property is available, if the current tenants have leases, all of the financial analyses (Let me know if any of you have come across something I might not know), section 8, available grants, and possibilities to finance the deal if the numbers work.  

I wish to make it official and get them on a lease. 

I would say look through your lease which you've probably already done.