This shortens my mortgage from 30 years to a little over 15.3 years.During this first year, I plan on making improvements + investments + other business ventures and I believe I will be able to pay $300 or $400 extra per month on year 2.

I like your mindset on using leverage to accelerate your personal real estate ventures- that's exactly how I began flipping properties. 

My bother and I put in the sweat equity in finding, managing, and interface with the tenants, while my father brings the financial backing for this venture. 

You may be able to joint venture with other IRAs or other individuals as a couple other ideas. 

@John M.Just wanted to put in my two cents as I am starting to venture into the turnkey world and have been wading through this the last 6 months. 

We help solve the issue of finding a contractor, and tracking a work order through completion but if your problems like outside that you may look to hire internallyIf you're looking for someone in the office to handle maintenance 9-5 you better make sure there is a 9-5 amount of work or else they start becoming jack of all trade employees which you inevitably will need to hire another coordinator down the line because their responsibilities will become muddled into the rest of the work flow.

I'm not a registered lender so max I could charge is 10%, so the risks are definitely not worth the reward, but maybe we could do a joint venture or figure out a way for me to get paid?   

Even so, I know I am wholly unprepared to venture into the business of real estate investing.

. * [Not a habit you'd want to continue].Might going into a joint-venture with a developer (who'd build on the lots) help?

Your education should’ve helped you fine tune exactly what niche you wish to specialize in (wholesale, flip, single family rent, multifamily rent, mobile home park rent, any other venture).