End buyer wants to buy property using quitclaim contract Im the second wholesaler on the Deal!

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need to know how to structure a deal where cash investor wants to buy property having it quit claimed to him. I am thinking about putting an assignment contract in place with my whosaler. It would seem to complicated and might scare off buyer, having 3 people having to pay. Easiest way to insure I get my money? Should I:

A) Write up a Purchase agreement instead and assign it to end buyer?

B) use my assignment contract instead