M_Boats: Furler on an M-17

Well Monty Sailors, the day has final arrived. My new M-17, Pepperjack, #652 arrived early this morning. What a beautiful sight she is!!! Today will be spent setting her up and doing a "dry sail." I do have one question for the group. It came with a CEI FF2 Furler. I think I can figure out how to install it ( I am somewhat mechanically challenged) but I am really stumped on how much line I need to purchase for the furler drum. Has anybody else put on a furler and how much line was needed for the furler drum. Thank you in advance for all your advice and input. Michael Akridge M-17 Pepperjack #652