You are right about the turn signal lights and that is on the list in my head. For now I will work on the sadle bags as they provide utility as well as aero. I have had the sheet aluminium bent to size and shape and instalation may provide an oportunity to incorporate the rear turn signals.
The rear sprocket may cause some problems when getting underway from a stop, the clutch may have to be let out more gradualy. But without trying it I can't be sure. I also have a 37 tooth rear sprocket if the 33 causes problems. I will keep the 33 tooth sprocket in for one tank; 15L, just to see what FE I can get.