Best to take the carbs halfway out. You’ll probably spend more time (& frustration) trying to get the cables in with the carbs in place, compared to taking them out.
The airbox has slotted mountings on all three bolts, about 1 inch of travel. This is enough to clear the carbs from the rubbers & wiggle them out. Mind the Exup cables as unfazed mentioned. I also removed the battery to free up movement of the airbox. Loosen the throttle cables on the twist grip end, and once the carbs are halfway out, (throttle cables just on the outside of the frame) you will have much better access. Getting the pull cable on is a bit fiddly, but overall, its not a difficult job.