It's the number of bedroom that makes sense.I do have the space to do it, and did consider it, but have been against it for two reasons: first, I only have parking for two vehicles based on how I plan to separate the property.  

Travel nurses will not only want it fully furnished, but may want linens supplied, and everything else for the house because they usually travel with only what they can fit in their 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.

My plan involved using the 150k to pay off my current loan and the remainder of a vehicle loan which would reduce my monthly bills by 350$ but the 150k loan would have to have a term of 30 years.