Is it acceptable to ask for a bank statement verifying rent collecting and or a tax return?

The conditions and restrictions are extensive. 

If rent collection is an issue, collect rent twice per month.

I've had clients that negotiated early extension options with national NNN tenants on several occasions.

They ask you what you want to do and follow your order and collect $.

With that being said, would you try to collect the rent until the end of May, and issue 7 Day notice to cure if it is not paid?

After refinancing, offer tenants owner finance and wrap my own mortgage, collecting a 10% down payment on the new ARV.

For 10% of the rent per month, they'll usually handle everything from marketing the home, showing it, drawing up lease agreements, extensions, rent collecting, maintenance coordinating, etc. 

Substantial services do not include the furnishing of heat and light, the cleaning of public areas, trash collection, and such.When extraordinary services are provided, the rental is treated as a trade or business and reported on Schedule C regardless of the average rental period.

The SLREIA and Utah REIA meetings have a lot of collective experience.