How to pitch to large investor?

[Jonathan G.]

Need some advice on how to pitch a deal to a large investor!  I have a history with the guy, and he has already given me a private loan for a construction deal I worked out for my job.  He is more of a pen and paper kind of a guy, and when I talked generally with him he is willing to hear me out on possibly investing $400-700k to act as a bank for my builder/partner and I on a deal.  

My parter and I are looking at purchasing a lot for $102k and then building the house on that lot for $350k so we would be looking to borrow about $452k from him (we have run the numbers below based on a padded $475k).  My partner can build the house in 6 months and we have drawn out a tentative draw schedule and the corresponding monthly interest payments based on our proposed 5% interest rate.  The proposal to the investor would be that we would use his money for up to 12 months and pay him the 5%.  If we hold it for the whole 12 months his total interest paid would be about $18k.  We are thinking based on my partner's extensive experience and our understanding of the market we are building in that it is realistic to think that we would sell the home by month 8 of the project giving the investor approximately $10k.  

I need help figuring out how to communicate this to my investor.