I will still be looking at leveraging wholesale strategy but also looking to incorporate other approaches as well.

Hello Patricia, it sounds like you’re facing a challenging situation, and you’re exploring creative solutions to keep the property without incurring unsustainable expenses.

If you use creative financing like I do, none of the other items matter in the equation.

Creativity like this is how you add value to STR’s.

Don't hesitate to schedule a time below if this appeals so that we can chat and discuss creative financing options.https://calendly.com/tycouttsBest,Ty Coutts

There are 5 counties, one incorporated city (SLT) around Tahoe and 2 states Each county has it's own STR regulations.

The contractor will be your best resource to understand cost of the design; the earlier you identify value engineering opportunities, the cheaper it will cost to incorporate (Google: ‘Macleamy Curve’).

I'd love to see a bunch of case studies on rehabbed RV parks and the ROI 5, 10, 15 years out with creative financing strategies for folks who want to try it. 

In this case, should the series LLC be incorporated in my primary residence state with individual LLC’s in the respective states where my investment properties are based?

You are going to have a lot of trouble finding financing options with a 2nd lien and to 100% make up a purchase price (i.e. 100% debt financed with no equity or down payment "skin in the game") as part of your payment.I'd recommend looking in the "Creative Financing" subforum if you want to explore potential ways of doing this but frankly it is really difficult to find a genuine "shortcut" that wont end badly for not investing any of your money at all.BRRRR Method remains IMO the best for this but you still have to put some of your own capital to use during the process