Way too much yard maintenance for a busy family of 5. 

Anyway, the back of the place looks like a salvage yard for appliances, and they had a pile of used evaporator fans.

Hopefully you're including ALL of your expenses when running your numbers; I didn't see repairs, plowing, yard maintenance, % to the rental websites, cleaning, trash, sewer, advertising, management?

I want a SFH because I'd have more room for my photography studio and yard and have no HOA payments, etc.

Yes, existing house would have to be torn down unless the houses were to have a small yard. 

Friendswood is in my back yard.  

For example, STWD has debt in the Hudson Yards project in NYC and 181 Fremont in San Fran.  

The one prior to this required us to remove 75 cubic yards of trash and "stuff".  

The quality of the residents is what's making all of the difference right now from a management perspective.We've done things like remove older carpeting and replacing with vinyl plank flooring, changing out water heaters, putting HVAC maintenance on a schedule, pest control, and better yard maintenance.

When I moved in there were already fences going from the front yard all the way through the backyard.