I too wear glasses but don't have a fogging problem. Go to a local sporting goods store that sells paint ball stuff. Pick up a bottle of the anti fogging lense cleaner for the paintball masks. IT WORKS GREAT on your glassess. I use it all year round for a cleaner.

As for the headwear I use the Ultimate headwear by Scentlok. Awesome it has a mesh over the ears so you can still hear thing around you.