The Sustainable Sites Initiative is most definitely NOT a reboot of LEED. LEED is crap for site work. It has a small section on site, but is primarily architecturally oriented. SITES is far more comprehensive and was developed by a wide range of professionals.....LAs, engineers, ecologists, biologists, etc.
I ahave never heard of the Roger book, but any professional practice book should suffice for the subject matter covered there. Sharky and Marshall are two older but perfectly good Propractice books. As for contracts, I found a cheap book by a guy named Acret which I like a lot. (I also have Hinze) It's format is actually similar to the "... for Dummies" series of books. Very digestible.