Sorry, I can't order your board - although I'd like to.
My Significant Other went on ebay and bought me... the AD9851 board.
Sure it has slightly better specs, but the dimensions [and pinout] make it physically incompatible, let alone the changes I will eventually have to make to the NANO code.
So, for the sake of domestic harmony, I will have to give the board a miss - although I'll happily borrow the schematic for inspiration.