I like the simplicity of that style brick home built in the mid ‘50’s for rentals. 

Would the mortgage interest costs be deducted from the return achieved from the invested funds that would have paid off the mortgage?

Because the 401(k) is an employer plan instead of an Individual Retirement Arrangement, many of the plan-side features are more powerful, such as higher contribution limits, the availability of participant loans, etc.Structurally, you can achieve full checkbook control over either an IRA or a Solo 401(k).  

However, if you don’t have reserves and are tight on cash flow, it’s likely best to just sell and get into something that better suits your investment style.

If the house is located in prime area, perhaps STR would makes sense with some tax loopholes that you can achieve and save.

Nobody tells you how to achieve the second phase of the project, the sale of the property—which is the whole point of the exercise.

Midlothian, Va vs Toano, Va.Property:Midlothian New Construction Stanley Martin 2 over 2 style:  3/2.5ba 1579sq priced at $410KSeller incentives : 5.5% fixed rate for a 30 years.  

In other words, even with a better rate of return, starting later can influence when you achieve the same end result.

Multi-family can work out but if you're marketing to travel medical professionals, many of whom work nights and sleep days, you'd need to be able to provide a relatively quiet space and that can be hard to achieve in multi-family properties.

“Alone we can only accomplish so much, but together we can achieve anything.”