I have purchased a new GQF 1502 incubator, and am getting ready to incubate this early spring. I've read alot about candleing eggs to see if they are fertile, and I think I understand that part. But have several other questions. Does "set" mean to place the clutch of eggs in an incubator? How does one keep the eggs at 50 degrees or so until one is ready to place them in the incubator? How long can one save up the eggs before "setting" them?