Depends on where your strengths and weaknesses lie. If you are already strong and powerful, and have speed on the road but not the track, then more riding is in store and you can ignore the weights. If you're abilities on road and track are similar, never lifted before, and you think you're going to stick with tracksprinting, then a basic program is good to start now so that the gains in the gym kick in with the increased skill on the track. I would just learn the sprinting side of track riding first. You'll make up quite a bit of speed in the first 6-12 months, then the weights will contribute to more speed increases if you're training right.