Do Not reverse the seatpost.. The best way to achieve a more forward position is to use a seatpost with setback.. The best for this is the VO Grand Cru Seatpost

http://store.velo-orange.com/index.p...g-setback.html

I have also had good luck with the FSA Seatposts with 20mm of setback.. I did not have good luck with the Thomson setback, it kept slipping..