I'm doing my first tri this september and have been training pretty hard. The only thing I really needed was a new bike, so I got a new trek 1500, and some aerobars to replace my old road bike with downtube shifters. I love the bike and the bars, but the reach is a bit long. I've been told I need a forward seatpost to get a position similar to a tri bike, and use the aerobars correctly. My question is should I spend the money on one, or can I flip my seatpost around. I was unsure if it would have problems supporting me, since it is not the position it is designed for. Thanks for the help, can't wait til september 9th.