As for the downsides, they don’t seem too detrimental to my goals so I’ll keep an eye out and use extra caution.

Compared to an IRA, Solo 401k contribution limits are roughly ten times higher.The Solo 401k will allow you to take participant loans while the IRA does notThere is no custodial requirement for the 401k.You don't need the additional expense and administration of an LLC to have checkbook control.There is a built in-Roth component whereas IRAs are either traditional or Roth, not both.A spouse can also participate in the same Solo 401k plan.

@Kelly DeWinter I think a key component of the marketing plan is demonstrating value.

Single and small multi both have their merits- i prefer small multi :)Also, here's a section of a post I just made on another thread about a more detailed method of cap-ex calculation:Truly, the best method for the over analytical, is to segregate the cost of replacement vs. remaining lifespan of each component of the property & find out how much need be budgeted yearly until replacement of that component comes due.

Great example of how to use youth as the only component of your life. 

Built-in Roth components, spousal contributions, and an additional tax exemption also apply to the Solo 401k.

The issue is how do we finance it and write the offer since there is a real estate component and business for sale?

Comps: The closest comp on vickers ave (less than 0.5mi away sold for $262k on 1/23/19 and it's a smaller 2/1 816sqft).

This gets somewhat better if there's a value added component.

They looked at total assets but my impression from questions I've been asked is that liquidity was a key component.