I'm planning on hatching 100 coturnix eggs in a week or so. I hear a 80% hatch rate is normal for an incubator, so I'm going to prepare for 80-100 chicks (to be safe in case more hatch than expected). I plan to sell the chicks within a week, with the possibility of keeping 6-12 to adulthood. How much feed should I purchase? 20 pounds? 50 pounds?