I included in the proposal the benefits for the landlords, such as no worries for vacancies, a 5% profit share on top of the rental rate and the provision of a professional cleaning team for their property.

This can be fairly straightforward, depending on your agreement and if a partnership return was ever filed, you'll want to report half or your portion of the basis in the property as well as half the sale price minus expenses.

The Seller did not want to Seller finance the property.

The great divide” is between purchasing real property for CASH FLOW, or purchasing real property for CAPITAL APPRECIATION.IKnow, I know, the two are NOT mutually exclusive.  

@Micah Loewen I only pay for one dumpster out of 8 properties.

Do you know why your property isn't renting?

Most lenders will source the funds and will not finance this if you are using it towards the down payment of the property. 

In my area properties are moving if done well.

You do not need a separate LLC for each property or a series LLC!

Well, my advice is that if you can't find information or reviews on a person, program or property, then it's probably not a good sign.