The existing infrastructure includes an RV park with 16 hook-ups, complemented by an impressive 81,000 square feet of diverse buildings, featuring a state-of-the-art 54,000 square foot indoor arena, a 26-stall indoor horse stable, a 40-stall covered barn, public restrooms, and a 3,500 square foot, 20-foot ceiling insulated metal building.

For illustrations sake, let’s say it’s 30% STOCK index funds/20% TIPS/30% Real Estate/10% Commodities/10% Metals. 

So far I have ordered the repair of the vinyl siding, placed a metal dish under the water heater to prevent corrosion due to leakage, and plan on eventually re-paving the entirety of the driveway, garage, and sewer drains.

I'm not sure how general liability would protect you either, my understanding is that this is mainly for bodily injury, property damage or other damages inflicted by you or your company, etc. and not anything along the lines of transactional issues that E&O would normally cover.

Now you will be in the position to invest in real estate as well as any other alternative investments such as trust deeds, precious metals, multi-family syndications, note funds, or use your IRA as a bank and do private lending (this is my favorite way to invest retirement funds because it is completely passive, high returns and lower risk, but you must do your due diligence on the borrower and underlying property). 

Type of roof material.One house has a metal roof and the other one is shingles8.

The deck boards were replaced at one point but the contractor didnt install a $10 piece of metal flashing under the balcony door.

When I sold my last house all of the fixtures except the ones in the 2nd bathroom were oil-rubbed bronze...I found this Rustoleum spray paint that was made to go on metal and sprayed that (shower fixtures, tp holder, light fixture, towel holder, all cabinet knobs and doorknobs)...did the trick.  

Once they told me about it, I was able to remove bottle caps, clear the disposal of other metal things (about $0.32 of coins if i recall) and get it working again.

I would recommend that he work FOR you for quite a while in order to prove his metal, THEN perhaps sell him some equity.