Cash flow is generally better with the MFs from what I have seen though, and you eliminate a portion of the risk as far as vacancy factor is concerned - so that is a good consideration to think about.Pretty standard practice I have seen these days amidst Covid is for the tenant occupied properties to require contract before showing, just to eliminate a lot of in-and-out out of respect for the tenants and their families.

@Mark DavidsonHere are considerations in choosing a Solo 401k provider and bank to provide the account:Solo 401k Bank Account Considerations:Here are some general considerations:If you want access to bank checks, a debit card and/or the ability to ACH funds out, you will need a bank, credit union etc. rather than a brokerage.There are 100s of banks and credit unions that have opened accounts for a Solo 401k.Keep in mind that the bank's role is limited to simply providing the account (i.e. no tax reporting, no recordkeeping, etc.) such you may wish to de-prioritize familiarity with Solo 401k plans and focus on other things that are important to you (i.e. branch locations, fees, etc.).If you want the ability to invest in stocks, mutual funds, etc., you will need a brokerage account.Many brokerage firms will open "free" accounts (i.e. no setup fee, no maintenance fee), which will also come with checkbook access and the ability to wire funds out such that they function as a "hybrid" between a bank and/or brokerage account.If you are looking for names of banks that open bank accounts for Solo 401k plans, there are many banks where we have received positive feedback including Wells Fargo, Bank of America, PNC along with local banks and credit unions just to name a few.

The loan is a Conventional Fannie Mae loan, which we specifically asked for because the title can be transferred into an LLC without triggering a due on sale clause.  

It seems they use several criteria, some of which are fairly minor considerations really.

I unfortunately liken this to fear, and obviously adequate risk judging needs to be taken into consideration in any real estate investments.

I now wish I would of just pulled the trigger years ago - because I truly enjoy helping others buy and sell real estate. 

Will take these into the considerations!

I would pull the trigger.  

Also, the cash on cash return isn't the only consideration--adding a bathroom often makes a unit much easier to rent, because most tenants prefer to have an extra bathroom...so, it could make it easier for you to find tenants whenever there's turnover--which, to me, is worth a lot in itself. 

It is for you to decide… but hopefully you do pull a trigger soon.