Should I Joint Venture?

[Peter Fife]

I've got a deal under contract for a 4 plex for 220k, an investor wants to provide me the capital for the down payment while I provide the money/expertise/management of the renovation and refinance. I've done several flips, but I've been the sole person in the process. 

Should I create a joint venture with the investor? Do I sign a separate note or contract that in exchange for the down payment in 1 year's time I will return the down payment along with interest? How do I structure this with a bank? I've done some reading and research, but I've worked so independently in the past that I'm having a hard time grasping the concept of using someone else's money for the down payment, getting a loan from a bank and having the house be in my (llc) name. 

ANY advice is GREATLY appreciated.