So, my plan has "evolved". It has gotten more complicated than I anticipated. (I haven't starting the build, so if there is an issue, I can still turn back.) I plan to use the following: double Ultegra crankset, adapter with a front derailleur, a Shimano 105 long cage rear derailleur and STIs (10 speed). I have a 10 speed cassette also. I am trying to do this with bullhorn handlebars, ControlTech clamps and a new T style handlepost. My question is: should I also be installing a second set of brake levers (inline Cane Creek cross top for example) so I can brake when I my hands are not positioned on the ends of the bullhorns?