Option 1
Pay the difference in cash
Buyer brings $339,000 and takes over the existing loan at 2.65%. Monthly principal and interest: about $1,550.
Versus a conventional purchase with 20% down: a $535,200 loan at about 6.77%, costing roughly $3,478 per month. Assuming saves about $1,928 every month, roughly $231,000 over ten years.
