Experienced Landlords deal with crappy tenants that piss us off by leaving their (tread) mark while they sneak out the back door.

Its also a duplex with attached garage.

We now use Buildium to manage several hundred doors, and it works fine for us--this is not a plug for them--there are many accounting programs on the market that will present a professional and polished picture to whomever is involved.Your point is well taken -- this is a business and needs a professional touch in every aspect possible. 

My little 3br house, you walk outside to get to the garage, 1040 square feet, 5,000 sf lot is now worth $550,000. 

The rule is also by number of loans not Doors.

I looked deeper and it says that the property needs a 2 car garage for it to pass as a duplex.i just wanna know if I’m protected to keep renting it out.

Mobile homes depreciate, but that doesn't affect you on a flipper's timeline.Just be sure you know what it'll be worth post flip and keep in mind some mobile home materials can be less common and more expensive (e.g. specific sized tubs, doors, wall panels, sinks).   

They lived in a shop, a barn, a garage, and a fifth wheel during her growing up years.

One tenant sent me an audio of the dog crying outside Kathy's door and honestly, guys, I couldn't listen to it.  

If I don't do the roof I could save about 4-5k garage door needs to be fixed/replaced, windows need fixed/ replaced, appliances/cabinets need replaced, 2 exterior doors need replacing.