As long as your IRA is not a Roth IRA and your 401k is not with a current employer, you should be able to transfer all assets to whichever structure works best for you.

Has to be with your current employer. 

I am rolling 401k over from a previous employer to fund the SD solo 401k.

You wouldProbably then need to pay Self Employment tax.  

If you end up starting your own business and getting out of your current job, you'll generally need to provide 2 years of self-employed tax returns to support your income.  

If they pay a tenant portion, I verify employment, hours, and wage, or if it's benefits, be sure you have documentation.

Also, consider that when you do employ a property manager they do not shield you from vicarious liability. 

@James Hamling The owner of Twin Cities Leasing gained his experience working at your employer many years ago.

Major employers like NASA and Redstone Arsenal make Huntsville a stable market for real estate investment.Housing Market:Home prices in Huntsville have been steadily increasing, yet remain affordable compared to national averages.

*Lake Anna, Reston Virginia*Originating in 1990, The Reston Town Center is a major employment and entertainment hub in the area, with companies such as Google, Leidos, Facebook, Microsoft, General Dynamics, and Fannie Mae, to name a few, more than 50 retailers, including an 11 screen LOOK Dine-In Cinema, CitySwing (Golf Simulator), a seasonal ice rink, many well-renowned restaurants and bars, and other highly attractive amenities such as a full service 243 bed hospital, a new metro, and the Dulles International Airport that is receiving $700 million renovations by 2026*Reston Town Center*Source: Rediscovering Reston-- the First Planned Community in the USSource: Washington Dulles International Airport to Expand Passenger and Cargo OperationsOne of the biggest points of discussion over the last few years has been around the office market, and how the rising office vacancies due to the shift towards a work-from-home and hybrid work schedule have pushed many companies to downsize or relocate out of previously major employment centers.