Your property taxes will also be higher as you can't use the home owner's grant.There might be local RE meet ups in Vancouver area where you can go and listen to what others have to say. 

Here's a link https://www.oregon.gov/ODA/shared/Documents/Publications/FoodSafety/ServiceAnimalsposter.pdf You're mixing things up and only looking on a local level.

Initially I’m wanting to start in the local Chattanooga/North Georgia area

Go to small local/regional banks NOT national ones.

Look up your local laws on how much notice you have to give to to end tenancy and then give them that notice.

Before making any decision, I would get a customized property evaluation by a local Realtor to determine the value of the property on both sides of the spectrum; sale OR rental. 

I'm a part of local real estate investors meeting and I have some good realtor contacts.

(In case the local government decides they don’t want the mobile homes there any longer.)

I'm a local real estate broker, investor, and manager (100+ rentals, mostly Airbnb/STR and multifamily).House hacking is a tried-and-true method and in Sacramento you can produce some meaningful income while enjoying the appreciation and tax benefits of owning real estate.

A quick call with a local attorney can set the record straight and help you navigate this without drama.