Family Private Money|Hard Money| Fee Structure?

[Michael Glaser]

I'm currently in scale mode and would like to join forces with a family member who has offered a sizable amount of money to invest. Right now I'm in BRRR mode and have been pretty successful the last year. The family member doesn't have any idea of what they'd want to charge me so It's up to me to suggest a fee structure.

My only question is how much should I charge myself in points and interest?                 

I'm thinking a HML at 10% is a good return for a family member. The hope is to refinance with a bank in 6-12 months.

Not sure where to start and make it mutually beneficial.