New flooring, new paint, open concept (remove walls), washer dryer in unit, SS appliances, tile bathrooms, etc.

Seems like that might be a bit challenging seeing as the house was built on concrete slab (so, my extremely limited understanding is that it might be a much more costly endeavor to build out an additional kitchen/bathroom because of plumbing issues, for example?)

All the floor boards are swollen from pet droppings and theres a stench from it along with her being an indoor smoker.

I will continue to invest there because I have a concrete system and network but I'm looking to expand into markets that have much more upside. 

A couple hundred dollars in painting, lighting, and flooring goes a long way.

Purchase price: $122,000 Cash invested: $24,000 Buy and hold - purchased via a wholesaler - brought current owner loan current - bought subject to - clean up, flooring, paint, then rented out, may Refi (BRRRR) in a few months to pull my cash back out.

The plan is to take the floor plan and split it in 2.

When I purchased my first three family rental, I rented out the other 2 floors and the 2nd bedroom in the unit I was living in.

Essentially leaving the second floor with just 2 beds, 1 bath. 

On the flip side, in most mobile homes the interior walls are not load bearing but instead decorative, and you may have greater latitude to move those around to meet modern floor plans (but consult HUD before you do this).