Given the property is located in the Poconos and the property is vacant more regularly as an STR there are proactive measures  you should  be taking such as making sure there are heating sources so that the plumbing does not freeze and ensuring there are no blocks in the plumbing lines with routine checks.

There is a major franchise that puts these together, writes their own lease (sale-leaseback deal) and surprise - Gives themselves rent holidays in later years in the lease.4) Realize there the return they give you is NOT guaranteed, so better history of the syndicator better the odds you'll get it.5) If you have the money, try to diversify and spread it around by prop type and location (ie make 10 buys of $100K vs. one buy of $1M)6) It's commercial RE - You CANNOT turn around and sell it if you need the money now. 

What platform is that group located?

Given the location and how the town has been developing it seems like a good investment opportunity for rentals.

The best amenities for Airbnb in terms of ROI often depend on your target audience and the location of your property.

Location, location, location.  

You can use your existing $25k + HML to cover your first flip, and make anywhere between $10k-$25k in the course of 3-6 months (given market, location, etc.)

Yeah, but it's not a magic way to save on interest."

I have decided on a value that each LLC has before starting the next LLC and some of this depends on the location. 

For long-term growth, consider newer single-family homes in high-appreciation suburbs or well-located small multi-family properties.