Congrats!!!! You must be sooooo excited!
It sounds like your are really prepared. I do have two suggestions though, but they aren't necessities:
1. Conditioner/Remoisturizer
(I didn't think I'd need it, but Rylie's hair ended up WAY nicer with conditioner. They sell Espree remoisturizer at Petco and it is really nice. That is what we use.)
2. A blanket/toy or both that smell like mommy/the breeder's place
(If the breeder is willing to part with something like this it would be very comforting to little Izzy. It will make the transition to your house easier and not so scary. Not to mention it will probably make it easier for everyone to get some sleep the first night! The familiarity would be comforting during sleepy time.)
That is all I can really think of right now and they aren't really needed. You will figure it all out as you go! Congrats again and enjoy your baby!!!!! We want pics!