Family Member as Hard Money Lender???

[David Palermo]

Hello, newbie here. I am in process of renewing my PA real estate licence and obtaining my NJ licence also. Looking to get into the BRS and BRRR and eventually into new construction. Looking to partner with my brother and sister-in-law. They would be the BANK, they don't need the $$$$$ and no real work for them. I will be the AGENT and GENERAL CONTRACTOR subbing all LABOR (we supply MATERIALS) out to my book of tradesmen. Initially, I wont be putting any of my $ into the deals until I get a few deals completed.

1) Would you recommend we BUY the properties CA$H and Rehab or Mortgage and Rehab??? 

2) What is the "normal" pay structure of this arrangement??? Some people have recommended 50/50 split on profits without the Buying/Selling Commission, some said the Commissions are included with the 50/50 split. 

3) As far as the Rentals go, Should I just get paid for Purchase and Rehab portion??? Whats a fair pay for the Rehab portion???
    Is a % of Rental ownership acceptable as well, if so what %???

4) A few people said to just treat them like a HARD MONEY LENDER. What the "normal" Rates/terms of this structure???

Thanks!

David