Joint venture deal question

[Whitney L.]

Question. Newbie here... I have been talking with a flipping team that has experience to JV with them. They want me to fund the 20% down payment and buyer's closing costs to purchase a flip. They will use hard money for the rehab costs. They will split profit with me 30/70. Biggest question, how to do paperwork so I get my investment back? Their JV form is short with no timeline. Should I ask to be on title or lien?

Details:

Purchase price: $100k

Rehab: $40k

ARV: $200K (I think this is aggressive for he area, but close)