Hivemaker.
Queen Bee
Colonies looking strong in November might be a long way away from looking good for splitting next April, they need to be well past the crossover point where more young bees emerge compared to old bees dying off. After twenty plus years at the game I still cannot predict with any accuracy when this will be five months in advance.
Very true, if any increase is needed I find it better to do it during September through into October, although of course that may not work well in other areas.