. - The reason i have bad credit is because of long time medical bills, and I bought the house last year from the owner who was losing it due to taxes.

I've tried to mention the most common things, but you have to talk to a local person with knowledge of procedures and traditons in the county you chose to "chase fireflies" in.

One of the standard setup is to have each property in its own single member LLC in the state of the property.The property LLCs are then owned by a holding LLC in WY or NV to benefit from their good charging order protection.In addition, you would use a C corp as management corporation to take salary (if needed to show steady income for future loan approval), retierement, medical and other fringe benefit.

I'm sure there are lots of legitimate people who need a comfort dog but the majority of tenants that are using this "reason" don't really have a medical concern.

For those outside of the medical field that may or may not have any idea that these positions exist, we live in a 5th wheel and travel from area to area every 3-6 months. 

Quickly establish WRITTEN policies and procedures to ensure consistent service for every client or customer.

How high you can go up on such a small size parcel can make a big difference in returns.If the buildings are old the procedure to tear them down could get expensive.Also tenants on current leases the disruption to their businesses would likely need to do in stages more (start and stopping) with development and meanwhile labor and material costs can go up.

The amount of Health professionals that live and work near the "Medical Mile", number of colleges with hungry student renters, and Amazon just greenlighted their distribution center here a few months ago. 

This documentation is usually a letter from a medical doctor or treating therapist who can establish the disability and need for the assistance animal.

That happened totally unexpected with having those medical problems but I am still hoping that that will pay off someday.