How to get hard money with seller financing?

[Alex Jacobson]

I have a project where the seller is carrying the note on the home with a 20% down payment. Now, I need private or hard money to do the rehab but no one wants to be in 2nd position after the seller.

My friend has advised me to get gap funding for the down payment but Im unsure how that plays into the hard money lender?

Purchase: 475,000 

Down: 100,000

Seller carry: 375,000

Hard money needed: 150,000

ARV: 850,000