Well for starters i was running a 138 because it was cold out, i just jetted it again yesterday (kicking myself for not making a jetting sticky) and i dropped it down 1 jet to a 136, and dropped the needle 1 clip, the bike seems to like it, i did a quick plug chop but i still might have to **** with the needle a little more. Adjust the idle screw(pilot screw) whatever the freak you want to call it on the bottom of the carb with the bike running and that alone will make a huge difference, mine is about 2.5 out right now, i can tell you for certain because i did it to where the bike idleled the highest, then droped it back 1/2 turn and lowered the idle to get it right. You want the throttle to be snappy, and that really makes a difference in how the bike rides and delivers power right off the bat.
My bike is jetted high because of the open intake, for your situation i would just jump it up 1 size if your going with stock jets, or if you buy a jet kit i would go with a 132 as a starting point and then play with it from there.