As mentioned already, the most critical would be a real estate attorney who is also well-versed in private money lending.

That's more critical to the protections than merely filing the certificate of organization. 

I was only suggesting that I had a concern where a company admits they are challenged when it comes to communication -- communication is perhaps more critical than anything else in my dealings.

The most critical part of the operation is finding good tenants.I currently self-manage my own property as an out-of-state investor in Arizona so I have some experience.

This is the critical document for you. 

Know how to take constructive criticism.

The no appreciation piece is critical, that doesn't sound promising but this would be a longer term play 5 year occupy, and then full investment rental.

The most critical part of the operation is finding good tenants.I currently self-manage my own property as an out-of-state investor in Arizona so I have some experience.

Know how to take constructive criticism.

That has long been a criticism of this structure, but this can help boost returns.