Tell us about yourself!
Something to keep in mind with your pvc selection is that it is a material that decays under sunlight. Much of the stuff on the market has been sitting exposed for a long time. But i am not trying to be a nay person. This is a great project. Build it, Don't get hung up on the potential pitfalls. They will smooth themselves out as you progress with it. This is a very doable project which deserves to be done.