Assuming they're buying it from your friend, a purchase option would prohibit your friend from selling it to them, which would defeat the purpose.Why not just buy it outright from your friend now. 

Why bother spending money on a software that requires you to still use 3rd party systems, thus defeating the purpose?

Tends to defeat the definition of the word: primary!

While defeated warriors go to war first and then seek to win” - Sun Tzu, The Art of War

@Ron ReadIt is possible to joint venture several IRA plans into a single transaction, but sometimes the administrative cost and complexity of doing so defeats the purpose.Because the joint venture parties are all disqualified parties to each other, it becomes very rigid, and extracting any one party (such as a Coverdell) is not possible in most situations. 

Smart and experienced wholesalers understand that cheating folks out of a fee is silly, unproductive, and self-defeating.

Run it incorrectly and you defeat the liability protection.Note that you as individuals can still have liability if you are the people doing the work and making the decisions.

Thinking of SFH (Single Family Home), as HOA regulations in some places restrict the use of property for rental purposes, which defeats the purpose of investing.2 Areas that I can think of are Hayward and Livermore.

I had to pay 1st class postage on them so it kind of defeated the purpose of starting small and cheap with a postcard to weed out the returns.)

I know questions like this get asked a lot, but I'm feeling pretty defeated right now.