First Time Private Lender Terms & Proposal

[Grace Griffin]

As the title gave away, this is my first time asking for Private Money, but it's also my lenders first time considering lending private money (I floated the idea to one of my trusted buyers and he is interested, and a successful commercial real restate investor I know personally). 

I want to make sure my proposal includes terms they see favorable, since they've never structured a deal or loaned their money before. Clearly, I want the deal to be favorable to be also, a win-win. Please include information I need to include in the proposal and usual terms, interest rates, private money lender wants. 

It is a SF flip 2b/1b, 2 car garage. Purchasing for 51k + costs. As is can list for 80k (one next door exact same house, exact same color carpeting etc --they once were owned within the family together-- pending in 45 days for 80k un-updated). 15k in cosmetic rehab (paint, carpet, update appliances, flooring in kitchen, roof patch up from Iowa's Derecho quoted at 3k) realtor plans to list for 109k. 

I have this type of vague idea of a proposal ready, but does it need to be more complicated than that? Other things I should include? And I have no idea what to offer for Private Money terms. I found a hard money lender note in the fireplace I might send with the proposal so they have more information. 

ANY HELP IS APPRECIATED! Thanks!