Dunno where you live, but it is certainly Fall here in NY. Actually, it's almost Winter. I think we missed Fall, and am writing Al Gore to complain about it.
So, what's holding you back? Get some lumber and start building. Every P 17 I've seen has been gorgeous. When you start yours, grab a camera, take pictures along the way, and post them here. Start a new thread as your "build log."
It's Fall. No more excuses. We'll be watching.