Get three 30 gallon tanks and 15 10's, put them all on racks and run them all on air pumps. put all of the mysis into one of the 30 gallons, and every three days pull outall of the babies from one of the tanks, put the juveniles into one of the 10 gallons, then after you have the first set of 5 10's filled you move the oldest batch of shrimp to the second 30 gallon tank, and repete the process with the second set of 5 10 gallon tanks. Continueing to take the juvenile shrimp from the first 30 gallon tank every third day, when you run out of tanks in the first set you remove the shrimp and use them for feeding, when you have all three sets of tanks filled you can only deal with one 30 a day. You have to feed them all freshly hatched artemia, preferably vitamin enriched. Also refresh the shrimp in the 30 when they stop reproduceing as often, just use the shrimp from the 30 to feed and the shrimp from the 10 that you would normally feed with and toss them into the 30. Also you can look at your breeders and pull out 9 out of 10 males and you will have just as many hatching but fewer being canabalised.
Useing this method you can have fresh mysis to feed with every day and you will only have to put in a little time each day.