I really appreciate all of you guys chiming in. I have a pretty good idea of what I'll do now but I will probably buy a few extra cogs and flip them in and out as I dial it in. I live in pretty hilly terrain west of Boston so I don't want to kill myself! This frame has been sitting around for 5+ years without being ridden so I am pumped to get it rolling again. Y'all have some sick bikes on this forum.