M_Boats: Sail Sizes and Features

Hello All, Does anyone have the exact dimensions for a M15 mainsail, those required to supply to the sailmaker who make the sail? I have the same question concerning the jib. Would also welcome comment on features necessary and/or useful on a new sail.With regard to the jib,is increasing the size a good idea, or do I go with the standard? Has anyone experience with using a drum and swivel jib furling system on the M15 ? Finally what does the term”85% jib “ mean? Thanks. I know the answers are out there. RTH.