I am currently 16 and am really starting to get into biking and take it more seriously. This last summer I've done several trips with the longest being 65 miles with me starting out late summer. Next year my goal is to be able to do 100 miles in a day. Anyway since starting out ive been using a basic Schwinn varsity for a training bike that I couldn't be happier with but am in need of a bike for racing in spring as my trainer has a flatbar setup. What would you recommend for someone who is at most able to spend $600? Ive been looking for the past few months pretty much everywhere and anywhere online with little luck except for the Schwinn CF-1000. Also for someone 5' 7" what would be the best bar height on the bike for me? Besides this over this past summer I've been using my tennis shoes for riding but have really grown to discomfort with them as they put direct pressure on the arcs of my feet and can cause some pain. I've been looking through shoes and really have liked the shimano's but am still confused on how the whole cleat/shoe/pedal setup works. Also I live in a city area where there can be plenty of streets to cross on the local trails. With having to clip and unclip the shoes it sounds like it would just be aggravating. Thank you in advance for your help.