Welcome Oculus
I also hail from Portland, OR. As mentioned I do like Delta Park to fly. It is not a bad place at all, the only problem that I have had is that my lines sometimes like to get caught in the grass.
If you have the time, you should come out to the fun fly in Vancouver on September 19th. There will undoubtably be many fliers whose brains you can pick and have more questions answered.
If you ever want someone local to go out and fly with, I am not a Master like some of these guys are, but I do like to get out there with a kite and have fun. I primarily fly quad lines, but I do have a "new" dual line that I am dying to try out.
Hope to fly with you soon!
Moon