WARNING: Fly rods are like Lay's potato chips... one is never enough and one bag is never enough....
As pointed out above, a good 9" 5-weight is a good place to start. A very effective set up can be had for just a few hundered. Do some research and you will see this.
I'm currently out of my mind, but feel free to leave a message, and if you would like to reach me by phone, please hang up now.