Matt - If I got that much for my F60 ..... I wouldn't hesitateI'm guessing your current motor should be worth somewhere between 7 and 9K. There are a few more of them available atm, as people are doing the same as you are thinking, and upgrading to the new F70.
I've been quoted $11,500 with the LAN Digital gauges , 15" prop & fitting (incl GST)
Chris