Only if you are registered with CSA as an elite can you qualify for prize money and podium position. The rest don't count for squat. Nevermind that it's the rest that pays the prize money for the pros that nobody ever see racing.
Don't worry about the stem length, handlebar width or seatpost lenght. Measure the VIRTUAL top tube of you current bike and match the new one as close as possible. Don't worry about the seat tube length or the S, M or L stickers.