I raise my own queens also, didn't try to raise many this past year (running out of equipment) , I have been building nucs and hives when I get the chance, have stacks ready to be painted now just not much time, not building hive counts up as fast as I could, the cost of equipment even build most myself plus the cost of every thing now days just slowed me down some. I think everyone should at lest try to raise there own queens at lest once, most would be surprised how simple it can be but it takes a lot of equipment and bee's to make up nucs especially when you graft 30-40 cells and hit 80%-90% hatch rate, got to have nucs with bee's to put all them cells in, just takes time to build up, im at 34 hives now and could be a lot more if would do some painting :-X , got so much going on at times it can be hard to work bee's like I want to but I am sure yaw know what I mean, good luck on the queen rearing. I got about 30 nuc's painted and about 20 needs paint, might do some fall grafts and winter as many as I can. Oh almost forgot, I don't use a system, I graft my queens.