My best advice is get advice from experts! If you have a bike mechanic that you have confidence with at you LBS is best. Second would be an internet store expert that don't mind giving you some phone time or E-mail time to help you out. Third would be here at the bike forum but more so at the mechanics forum.
That is exactly what I did when I went to revamp my 1983 Cannondale to bring it more into line with the 21 century. It turn out pretty good!
Double O