I used to drive commercial motor vehicles and Colorado scenery always left a lasting impression upon me.

I have a company focused on building healthy homes, mold free, chemical free homes.  

The rental market is solid right now, and long-term unfurnished rentals are a very stable investment vehicle. 

I like it is an alternative investment vehicle, and my goal is to have two or three sources of passive cash flow over time.  

I have been reading and reading to narrow down what investment vehicles to choose.

Generally an s-corp is the absolute worst vehicle for real estate investing.

That is not possible within IRS rules, other than by taking a (potentially taxable) distribution from the IRA.The questions I would suggest you ask are related to keeping the Roth IRA as a tax-sheltered vehicle.  

One should be  devoting his or her time building similar vehicles while competing with the masses in these competitive times.

Even if money weren't a concern, two companies will limit me in other ways such as what marketing would I choose to put on vehicles, introducing two companies to people I network with, etc. 

This would be a commercial note limited to 80% of the trade-in values of the vehicles and would be priced around WSJP + 2.50% with a 1% origination fee of the loan amount.