This has already been said, but I want to put in another vote for making the overhang more than 4 feet. If you are going to go to all the trouble of putting in a roof - you may as well have one you can stand under comfortably during inclement weather.
Lang 48 Original
Superfast RED ThermaPen
"I love animals. I just love to eat them more. Fun to pet; better to chew." - Jim Gaffigan