I have physically poured the slab, framed, plumbed, and wired these homes I have installed the hvac and put on the roofs.

If your plan is to move out of SD and be physically present and repeat the process you will retire in a year or two.

It doesn't matter how you get in to the material, whether by audio, electronic or physical books, just keep absorbing the information.  

But I do recommend keeping an eye on the available tech because I don't think it will be long before physical proximity is unnecessary.

Also, deductions (interest, property tax,  depreciation, etc.) do not apply to IRAs that own real estate even when a non-recourse loan is incorporated. 

A couple wants to rent but one of them has income of $19k while the other is attending college full time to get Physical therapy certification so no income.

BiggerPockets said i did not have to be an expert to learn from and join a community consisting of experts. to  prove my dedication to myself to pursuing yet another lead to the freedom i fantasize of, i signed up to the Pro membership. with sooo much information out there on anything that piques an interest its difficult knowing what to digest and what to detest. i want to build wealth using the vehicle of real estate investing. i want financial freedom from the powers that be real estate investing. i am married and a father of 7 children, 4 of whom i am physically responsible for. i hold a commercial license which i currently wield to operate refuse compactor trucks for private sanitation companies.

I would absolutely recommend incorporating, such as an LLC like you mentioned.

Not to imply the micro doesn't matter, it does tremendously, but only after the macro economic picture is thoroughly understood and incorporated into your overall risk assessment.  

Your posts indicate you have done lots of due diligence already regarding the physical condition of the property and the numbers look pretty good.