Especially in a more competitive market where the options are plentiful.

I have a STR in the Sullivan County and have been looking for a cleaner but the options seems to be limited in this area. 

There's too many investors who are front page news in Northern states re CFDs gone bad and Texas where lease options went bad and the state enacted buyer protections...Take care to all.   

However, I am unfamiliar with any lenders having traditional mortgage options for anything with a VIN number such as a trailer.

And sounds like a good set of options you are looking at.Here's some data and visualization on recent trends in some of the markets mentioned here.

IF so then Furnish Finders might be an option for Mid-Term rental.  

We are wondering what would be the best option to do with the property during this 6-7 month period, whether that be Airbnb or what other short term rental options might there be that could make more sense?

Have you also looked into other funding options?

Maybe being a limited partner with some of the really good syndicators out there is an option to this route. 

Youre with WAY too many options and decisions at one gulp.