Re: Even split advice
The problem with making a split and adding a caged queen later is the bees will begin making emergency queen cells. If a queen cell is in the split the adult bees do not consider themselves queenless and will kill any added queen. You would have to cut all queen cells in the colony, and the bees may continue to build cells until all eggs and larvae are too old to make a queen.
What you could do is work the colony today, putting frames of sealed brood in the upper hive body above an excluder, and making sure the queen is below with the frames of unsealed brood. This would make the time needed to make the split less because you would know where the queen is, and would have the frames of brood and food ready to remove to the new box. You may need to check the sealed brood for started queen cells but shaking the adults off and doing a check would not take long.
I have always had more success adding the caged queen at the time of the split than waiting to add her later.
42 + years - 24 colonies - IPM disciple - Naturally Skeptic