Definitely get on the spinach, it is a cool weather crop. Chard can handle cold, lettuce can not. If you plant it now and after it comes up it looks like it might go down to freezing overnight, cover it with a row cover.Is it too late to plant chard, spinach, lettuce, etc.?
Found this related to Angel Food cake pans:Got this. Anyone have those angel food cake recipes?
"The three variables that mattered most were weight, finish, and a removable bottom."
Not sure how well your pan will do for angel food cake but maybe someone has successfully used that type and can respond.
Now, what are you going to do with the 12 egg yolks! I don't recall what all DD1 made with them but I'm pretty sure there were a couple of batches of chocolate truffles, they take 2 yolks each.