What planting zone are you in in Nehawka, Michael?
I'm 5B/5A border here, similar colony count, and have no problem populating a cell builder, mating nucs, and getting queen rearing rolling grafting the Thursday nearest April 15th.
When's bee camp? Early April? Maybe you're doing a lot more nucs than I am though. First round is usually 15ish nucs (2x deep frames each usually in 4-way boxes). Then it balloons up after that obviously.