I think you should have plenty of space, but get out your tape measure and take some measurements. I'd prefer a build space that is 4 feet longer than the boat and about the same amount wider. . . . But you can actually survive in somewhat tighter spaces if you are determined.  

I agree with Birch2, and it never hurts to measure.  I would also recommend that you use good sanders with effective dust collection.  The resin and fiberglass youl be sanding off are not good things to breath or mess up a garage with.  My contractor son-in-law recommended Festool sanders with their HEPA dust collector which was confirmed talking with people at the Wooden Boat Show in Mystic.  Best investment I made after the Peeler kit.

Have fun,

Dick

http://cumulus.aunt-mary.net/images/peeler/