You can definitely do it.

I'm in search of a GC that can do a full ground up build in Dallas,TX and surrounding inner cities.If anyone can refer or point me in a direction of a pro please helpWhat price range do you want to be in? 

Also, after our other loans mature, we plan on doing the same to subsidize our retirement.

Do it with pen and paper first and then once you're well versed, you can start to build out a proforma model.

., I would do a search on here for Galveston and you will find some info.There are a lot of STRs there so you will be forced to compete on price so self managing is going to be the way to go.

I am doing three right now.

It sounds like a tough situation.Based on your post it sounds like you might sell at a loss, if you do go that route? 

How do you know the difference?

I am considering the pros/cons of doing this without a property manager or real estate agent. 

Compare that to a wholesaler who has no proof that they do have buyers or can actually perform.