(been working and succeeding since 2008 or before, someone you have experience with, good returns, close to 5yr investment?)

Expected return was 15%?  

$500k would be enough to go out and buy something else leveraged that would potentially get you a better return.

I'll focus on maintaining the property and optimizing rent increases to ensure consistent returns over the years.

Selling the property within your Solo 401(k) and returning the proceeds to the account simplifies compliance and ensures tax-deferred growth (or tax-free in a Roth Solo 401(k.)).

I hit 100% cash on cash return on all these B or C areas and they often outperform my better neighborhood properties. 

Hi BP Community,
I’m excited to be back on Bigger Pockets! In 2021, I successfully launched an Airbnb, thanks in large part to the amazing advice and support I received from this community. It was a great experience ...

This also helps with asset protection, monthly bookkeeping and annual tax return preparation. 

Every market in residential zoning has an expiration date, we just don't know what it is yet.The obvious solution is to buy in already regulated areas with tourist/commercial zoning.The returns are lower, but at least they can't go to zero overnight.

I will likely be challenged to get a 1 to 1 return on adding the AC, adding an EV charger, converting a sound studio to an office, and furnishings.