This investor might be gambling that you miss the balloon date, he forecloses, he keeps the down payment, and he repeats.  

I don't like the lack of control and the entire thing strikes me as a legalized gambling operation where the house has their thumb on the wheel.  

I've chosen a job that allows for 5 months off if necessary so that part was by design.

So my first suggestion would be to learn how to be an effective landlord if that is the chosen plan.

This is a heck of a gamble.

For $50 a month, you are really taking a gamble on not getting the 3 showers a day tenant like @Colleen F. talks about.

http://www.biggerpockets.com/rei/minnesota-real-es...MNREIA is a pay to play outfit so although they are good, I haven't chosen that route myself.  

Also, each actual location chosen for the local summits would have minimum standards to adhere to.Each event location would set up their own local booths, meetings, local speakers (BP members) to discuss local conditions, to network, etc.AT EACH LOCATION:Each day of the event would have up to 4 hours of national speakers from the Main Summit.Each day of the event would have up to 4 hours of their own local booths, meetings, local speakers (BP members?)

Unfortunately you just have to pay it or walk away from the idea of getting clear title as you have no grounds to stand on in these situations as you ARE subject to the first mortgage at the least.It is a legal form of gambling and not for those that aren't prepared to lose everything they spend on these deals. 

MASTER the niche you've chosen...This is something that early on I personally did VERY WRONG...