Hello! I'm going through the same process, and seem to have the same ideas as you guys. I am in the process of getting my toggle switches from TJ Brutal Customs as well. Welder1 - did you look at TJBC's single cable throttle assembley? That, combined with their throttle sleeve, would eliminate the housing on the right side of the bars. My plan is to drill holes in the handlebar for the turn signals, similar to Calaveray.
Sometimes it takes a whole tankful of fuel before you can think straight.