Also, having a rehab budget already laid out with explanations on how you got the numbers would help and is definitely a plus when I look at deals even though I typically wont use their numbers it at least shows a little more effort. 

VRBO of course has no co-hosting option.

They typically provide education and also have classes/courses to take.

Not sure what market you are in, but I would talk to some lenders about FHA options on a 2-4 unit property.

We have a few parks and we utilize both options.

Then laws changed and SSN's became our IDs and we could no longer typically ask for them in my area as a landlord.

Since tax bills are for entire parcels (typically, though not always) then it is highly unlikely that they somehow segregated the taxes for that small portion and paid it.

IMO, at least for now, the best option is to use stablecoins.There are a few different types.

What are options for having our investors pay their share of this monthly fee?   

I'm happy to chat about your options to see if we can get you out of this mess.