Hey there TohTruck!
I say, get the thickest grips from REI right now. However, you most probably want to get to a Trek dealer, so that you can get some Bontrager Satellite grips, later. That's what I have on both my Giant Innova and my Trek 7.5FX. I really love those things!
Also, don't forget gloves, too!
- Slim
PS.
Stop prefacing your post with the "dumb" stuff. You haven't asked a "dumb" question, yet!
It's not too likely that an intelligent person is going to ask a "dumb" question...