Hi,
Have you looked at NOEO? It is science using a notebooking approach. Plus they have science kits that come with the set. They include everything you need for experiments. It is somewhat expensive, but you get all the books, teacher guide and kits. If you are tight on $, then you could order the teacher book and kits, and then try to utilize the library for all the books.
It is a lot of fun and this is our second year using NOEO.
Jean