BUT, if you build another structure, all bets are off. 

Am I off with my math here?

( I'm also getting advised to put them in land trusts on top of the LLC's now $$$ to avoid issues with my loan companies & having them in LLC 'sI feel EVERYWHERE you turn you hear never have rentals in your own name  put them in an LLC In retrospect , I am wondering why I would not have been petter off to keep them ALL in my personal name with 1 giant 5 million dollar umbrella policy for liability  ........

So would i structure how long and how often like " property generates X per month, monthly payment to be 50% of X for however long it takes to pay it off (would calculate)?

If you don’t need to live off of cash flow, it’s not really necessary to grow wealth from real estate.

Here are a few resources that can help-ABCs of real estate, The Best Ever Podcast With Joe Fairless, and podcasts such as The Multifamily Take-Off, Multifamily Mavericks, The Michael Blank Podcast, and The Real Estate Monopoly Podcast (this is one that my brothers and I started). 

I used that 50k to house hack the second one and been slowly paying it off.

We're ramping up efforts to improve that this spring/summer.

I have to look off-market because inventory is extremely low here.

If you're considering new construction buy-and-hold properties in strong markets and prefer a more hands-off approach, it's worth exploring.