Hi Ron, how are you doing?
I think May through July make good queens for me, but some of that answer depends on what you want from your queens and of course the weather that year. Sometimes I add drone comb around end of Feb/first of March and start the queen rearing near middle of march to first of April, but for me so far, the better queens come later. I think the weather is better and more stable a little later, like in May, after the April showers and during the May flowers.