By now I guess you have decided how you are going to do leaves.
I agree with BADBOYGEORGE. If you are going to do leaves, get it to the point where you have an enclosed dump truck with a vacuum attached, parking lot blowers, tarps, and a place to dump leaves. This can be an excellent add-on service if you are set up properly to do it. By offering a vacuuming service, you will also put on jobs that we call vac only accounts. Those are people who get the leaves to the street for you and you swing by and vacuum them up. This is a true money maker!
Any other way of doing leaves and you are doing it for FUN!
I realize you may not be able to start out with this type of set-up, but get there as soon as possible.
Good Luck - luck is where skill and preparation come together.
Wayne's Lawn Service
"Where Profit is not a DIRTY word"