I agree with those suggesting Planning Your CM Education. I believe I downloaded it and printed it off to put in a binder. I just took it with me and worked on it while I was waiting for my dad to get out of surgery (a year or so ago).
I have used the curriculum guide, and I love that you can just look through the lists of books and pick from various levels of abililty. (They are listed as grade levels in the guide.) The books listed are linked to the bookfinder, which is helpful in deciding which books to use. The listings show you how many chapters, suggested grade levels, and how many pages in the book.
Also, don’t get confused when looking at the Science listings. There is one column that suggests textbooks and one that lists living books. You can just use one or the other (or selections from both), but you don’t have to use both together. Of course, science for first grade is often mostly nature study….unless you seem to have a budding scientist on your hands!