Oh, by the way - have you ridden part of your metric route to familiarize yourself with it? I believe Mr. Beanz said that Nohl Ranch Rd was pretty hilly but you'll see that right after that you turn right on Cannon Rd and that is a Hill. I went over that road on Saturday and I think the way I went was a little easier than the way you'll be going. Heh heh. Of course, it's at mile 45 too, so you'll be nice and warmed up by then.
I would suggest riding (or at least driving) the part of your route from mile 39 or so to mile 45 or so. If you ride, you can come back on Villa Park Rd to Wanda Rd, start and stop from Eisenhower park or something like that.