The problem with that method your in the lap of the gods with the weather and starting to get late in the season for virgin queens.
I answered to you, but it does not suit to you.It seems to me no one can actually answer the question. How do you make a laying worker colony QR?
Three of these started to lay yesterday.We are always in the lap of the Gods re. the weather.
there is still plenty of time to get virgins mated (he said crossing his fingers)
I have 7 nucs each with a virgin queen at the moment.