Alternate rent models can work in specific situations, but as you said, they aren’t always superior to traditional LTR, especially after the costs and effort. 

I am also a realtor with clients who are investing in MTR's in my market, as STRs aren't allowed.

They're probably fine with you paying for additional marketing as long as they aren't cut out of the deal.

Also, make sure there aren't additional restrictions on the property condition, compared to a conventional loan. 

@David ShirtsIn my experience, seller financing can be a game-changer, especially for properties with clear titles or when traditional loans aren't an option.

In my experience, you are thinking through this correctly.I've heard lawyers say, if the loan is in your name (which it has to be for conventional) and the deed is in the LLC, you aren't treating the business as an independent entity and in a severe lawsuit, the corporate veil is pierced and the LLC can be thrown out.I agree that one of the best defenses is to run your properties well. 

However, most investors aren't going to front money for a subject to deal unless they do subject to.

The older homes there aren't as bad (2k to 3k). 

Sounds like this was a TIC setup which seems an unusual investment for an SDIRA (and problematic, from what I understand.)Aren't you the beneficiary of the inherited IRA? 

Since I am assuming you aren't a super host and don't have any or many reviews yet, you will want to underprice your competition to get some traffic and then you can tweak prices from there.