I'm going to convert to drop bars on my Jamis Coda Elite, which has disk brakes. The stem on the bike is for handlebars that are 25.4. I was wondering if I should go with a different stem and go to the 31.8 handlebars. I have big hands and I thought that the bigger bars may be better. The photos are to show the brake cables and if I would have a problem with where the bosses are. I read where some people have had some problems with the Tectro (spelling) brake levers and I was thinking about going with Shimano. It will have bar-end shifters as well. Thanks for any help.