In summary, I would not make a purchase decision solely on cash flow unless it was in a different league than you example.  

@Matthew Champion, Great advice above. 

Looking to purchase Clayton or Champion Modular (Tiny House) for use in Florida - any insight/experience with modular housing in Florida would be much appreciated.Financing is available directly by some manufacturers (Clayton) and by 3rd Parties for other manufacturers products (Champion).There is additional benefit in not having to pull building permits in Florida if modular product is 399 SF or less (I believe)Here is LINK of Champion products fitting this model: https://www.championhomes.com/...

I work in finance for an ivy league university and it's honestly second nature.

BTW--That's Major League Baseball on the TV...Maybe that's why it's so happy.

The marketing worked a lot faster than I thought it would, and I'm feeling way out of my league.

So again, I would outsource it, build a champion and family member for your business. 

League City is great for long term rentals. 

I do not want to be a real-estate champion managing many properties.

I know it's more common with rare supercars but that's way out of my league for now, I've been doing this with sub $30 000 cars