I can do it.
I will put a sell order immediately if the price falls below a certain limit that depends on the amount of coins you send as collateral. So more collateral => less risk of selling.
4000 SDC = Sell if price falls below 0.000125BTC.
Repayment amount: principal + reasonable interest (anything you like.)
But I will charge 3% for every day overdue. ie. if I lend today, from 5th December.
PM me if interested.
All collateral should be held by a trusted third party escrow. The escrow can enter an order to liquidate the collateral in the event the price falls below a certain level.