What!! I leave the seeds in. My grandma has been making her sauce for years that way too. Oh time to core them...
I am in apple sauce heaven as I just got an apple sauce mill for my kitchen aid mixer. It is so fast and works like a dream to keep all skins out.
OP, If I were you, I would get 100lbs!
Put some in a tote in your basement for winter, skin, slice and freeze them for pie on a lonely winter night, and dry them too.