Hi Myra,
It sounds like you have quite alot of stuff already!

Of the things you mentioned replacing, here are some of the items I really like.
1. Electric Mixer- I have a KitchenAid and LOVE it! I have the one that the bowl comes up to the beaters. Wouldn't want to function without it!
2. Baking Pans- I really like having a Bundt Pan. It makes a very nice looking cake, that looks pretty on a glass pedestal. I like how the cakes are for every day consumption too, no fussing with icing.
3.Muffin Pan- I like the ones with 12 muffins. They usually do a whole recipe without any empty places.
4.I like to have a Hand Mixer, for making whipping cream, etc., so I don't have to get out the big mixer just for a small amount.
5. If you plan to make alot of cookies, I would suggest a Silpat. It is a silicone-sort of mat that you put down on your cookie sheet, so that the cookies can't stick. They are really great and just wash up with a little soap and water. They are reuseable for many years. Rather pricey though.
6. I noticed that you already have a Crockpot. If you didn't, I would really suggest you buy a 5 or 6 quart size, since it seems that alot of recipes require this size.
Good Luck with your cooking and baking! Enjoy!
Jenna