I'll be building up a wheelset the coming spring. It'll only be for crits, race day wheels. I weigh 125 lbs (race weight, right now I'm 135 lbs). I'll probably be using a 38mm carbon tubulars. Is a 20/20 spoke count a bad idea? I have 20/20 hubs that I acquired for cheap before really giving the spoke count any thought. I figure the 20 spoke front will be no problem. But what about the rear? Is 20 no good? Too much spoke tension? To much space between spokes?