We use 8 eggs every weekend for bacon and eggs for breakfast. So, 20 a week with a frittata, and even more for baking.Um, in "high season" you only need maybe 2 chickens to make 1 frittata per week. In the down time it doesn't matter how many chickens you have since they aren't laying
I don't know if the pullets who started laying in November will lay next winter. I have one pullet who has yet to start (at 38 weeks!), but she better make up for it next winter!

I plan to water glass some eggs this summer/fall to have some for the "lean times."
Now the slacker Jubilee Orpington who is 37 weeks old needs to get with it! She's looking close. Do Orps normally take this long?