Seeking advice on how to structure the deal

[Deonnia S.]

...i reached out to an investor asking that i be added to their vip cash buyers list, as i have been given the green light by several buyers to bring sellers to table. she sent me a deal - its great, off-market in north cali with around 40 units, fully entitled. so i sent the deal to my cash buyers list and immediately got a buyer who wants it. 

i asked my investor friend if she pays a finders fee and she said yes...but since i know that my cash buyer is more than happy to pay above to asking price for the deal, id rather secure the contract myself and then assign it to my buyer but one obstacle i might face is that my pof isnt for 10 million its about half of that....with getting this contract myself also i dont have to worry about next time my buyer going directly to my investor and getting future deals that would leave me cut out of the deal.(which just happened on our last deal)....please advise what would you do?