Like you mentioned, there are lot fees that need to be paid monthly.

Have yet to see any of the posts mentioned, so they must have stopped years ago. 

I would also note your mention of not wanting liability, but offering to "co-sign".

They build on site.One thing you mention is construction costs. 

Mention how the seller can close in days or months?

If you have a plan A and a plan B going in you are setting yourself up to fail right away because you have told your minds already it won't work so you won't put your all into plan A. For

As you correctly mentioned, you’ll need at least two stays.2.

As mentioned the main downside to using a SDIRA to purchase properties is you get no tax benefit upside (depreciation) and have to pay taxes on UDFI.

Hey @Marc Shin, personally I like what @Bruce Woodruff said.You could get things ordered that you need plus hit up all those places that Bruce mentioned.

Those should drive a ton of traffic to your listing.Furnished Finder is the go to for MTRs (long term rentals with a shorter stay, over 30 days).You can also use FB like @Bruce Woodruff mentioned but you will need to get everything setup to take bookings.