Ethical Wholesaling Exit Strategies?

[John C.]

Hey everyone, I'm clearly new to the forum but have found this place to be a trove of information and really love it here. I can't tell if I'm in the "analysis paralysis" stage, or just being careful.

To start, I have chosen my first niche and method (SFH wholesaling) and am ready to begin but do not have a contract drawn up. One of my biggest fears is getting stuck with a property and being taken to court for the full cash amount, which I most likely will not have.

What can be added to a Purchase of Sale and Contact agreement to protect me if for some reason I was unable to find a buyer within an ample amount time? Now I don't intend on making bad deals or cheating anyone, I just would like to hear some ideas for a worst case scenario. 

Thanks in advance-