A two bedroom 1,300 sq ft cabin is going to go for way less than a 2 bed, 2,400 sq ft cabin.One of the issues out there too is that some are setup as legal 2 bedroom cabins because of the septic but then they have lofts and such that allow you to rent them out as 3 or even four bedroom cabins to improve the rent.You mentioned one nearby you with a similar layout.

Wisconsin Legal Blank  Before the next rental period meaning i would request one sent by current seller via amendment 

They both work slightly differently, but are similar enough that a call to the tenants rep usually can get you on the right track to making sure you follow all of the guidelines.

Its my understanding that the individuals are responsible for all the legalities, contracts ect to make it safe not to get ripped off. 

Quote from @Sam Epperson: let's say I come to an agreement with the seller for them to finance some of the deal. let's also pretend the seller owns it with no debt, and we agree to 5% down, 5% rate, and 10 year balloon. how are we drafting this legal document?

Is most areas, this will determine who (Marshalls Office or Sheriffs Office) will handle the situation when it comes to the eviction.Some squatters know their rights and how to finesse the legal system so be ready for that.

For a month-to-month lease that isn't under any lease agreement, what could the seller legally do to get the home sold off-market?

I can legally deny them or other business.

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Most are fine with that, but a few will have problems with it and claim there are legal issues, etc..