I would read the E & E for Civil Procedure. You will have to read it again during the semester, but as with anything else, repitition is always important when learning a subject. Before my first year I read the E & E for Civil Procedure and ended up doing very well in the class. I probably read it twice again throughout the semester, but having read it once before, at a minimum, helped me become familiar with what proved to be tricky concepts.
I read the Torts E & E as well. Although, again, I feel that repitition is always important when learning the law, I wouldn't bother unless you really want to.
The E & E for Property, on the other hand, was very helpful. I didn't read it during the summer, but spent quite a bit of time on the sections dealing with Life Estates, Covenants, and Equitable Servitudes. Because I waited until the semester to know what the professor taught, however, I was able to to focus on those concepts rather than having wasted my time on topics we didn't cover in class.