So I’ve read that unbrella insurance providers require you to use them for car and home. I am a land lord but don’t own my residence.What are my options?

That seems low with the 5 units and storage you mentioned unless they are 1 bed units. 

I'm trying to figure out a way to utilize a large storage building at one of my MTR listings in Memphis.

I would never own rental properties in my personal name.

Personal Property coverage- furniture, lawnmowers, signage, etc. 

In my case, I have residential rentals in one LLC, commercial properties in another, self storage in a third, and my real estate company operates in a fourth.

The key is to identify personal property from real property.

The Importance of a Great Real Estate Agent: A Personal Paradigm ShiftI got my real estate license a while back, and I always heard people talk about the importance of "bringing value" as an agent or broker.

. - Storage and Mobile park prices could soften.

Along with the dwelling unit described herein, the Premises include the following: (i) _____ Storage Locker; (ii) _____ Parking space(s) (Identified as _____ and containing _____ parking spaces (also see Section 9 below); (iii) _____ Garage (Identified as _____ and containing _____ parking spaces and _____ transmitters (also see Section 9 below).