Glenn,

I actually did the same race at Stoney Creek last year. One water bottle was fine for me as the course is only four loops, plus the temps are low. Shorts are fine, however the "family Jewels" get a little cold. I would just wear some thermal underwear underneath. A long sleeve racing shirt i would recommend if you have one. If not, arm warmers for when you get on the bike. The run is not cold, but the bike is when it gets a little chilly. I will probably slip on some knee warmers just for the bike portion. when i do the race. Be prepared as the the bike course loop is very windy on the lake side. good luck.