Bringing an investor for a quick flip, contract assistance tips

[Jacob Smith]

I am looking at a property to flip quick.  I am looking at a property that needs well and septic.  I have buyers if we get it done.  So I am bringing in an investor for the capitol of the purchase and repairs.  I will be doing all logistics, so we plan on splitting the profits on sale.  

I am looking for suggestions on how to write up the agreement between myself and the investor, who does it get deeded into, Who writes the offer, etc.  

And getting a purchase contract written up with earnest money with the buyers after the septic and well are put in.  

We are looking at a 1.5-2month turnaround.  

Any advice would be great!  

Thanks,

Blessings