By self-managing I know which of my properties are problem children and which are my star performers.

While every IRA must have a custodian creating a special purpose LLC can allow you to bypass the custodian when making investments and performing transactions which can save time and money. 

Originally posted by @Mark Ainley:@Marcele Johnson I dont think he is here on Bigger Pockets but I have a great contact for you who is on the east side that has had dealings with them. 

The costs could be justified if the rental performs well (a little less profit short term, for longer term appreciation gains and with little to no effort on my part).

They were originally single family homes.

I would also look up top-performing investor-friendly Agents and ask if they would have investor buyers.

No licensed broker may pay a fee or a commission or any part thereof for performing any act specified in this chapter or as compensation for a referral or as a finder’s fee to any person who is not licensed...The statute in this great state even cites relevant case history.

I need the asset to perform 365 days of the year, so I am exploring medium term- 1 month medium stays.

In single family real estate you do this by choosing an investment that will perform and then using insurance to protect it.  

Given your experience and strong financials, you have some solid options:Commercial or Portfolio Loan: These are tailored for investors and can help you avoid personal guarantees, especially since you have an LLC.BRRRR Loan (Buy, Rehab, Rent, Refinance, Repeat): Some lenders offer BRRRR-specific loans with funding for purchase and rehab, allowing you to refinance based on the new ARV once stabilized.HELOC or Cash-Out Refi on Current Rentals: Tap into the equity on your single-family rentals to secure funding for the 4-plex purchase and rehab without high origination fees.Each has pros depending on your cash flow goals and timeline.