i went for the 54 full system/ecu and does sort out the flat spot well, but would no doubt be better still with fim chip/power commander to set it up more accurately.
dont know about the optimum gearing; depends on how and where you ride most i guess; but i went for a 14t front, works as a good overall change for me (road and track).
lots of talk about quick action throttles at the moment, but i seem to about the only person that isnt bothered by it! i think even im capable of hoisting the front coming out of a bend with the current throttle, cant think i would need to open it any faster, maybe im missing something