congratulations, you're going to love that system.
There are all sorts of things you can do to fill in the time. Read your AVR manual so you know exactly how to set them up after they arrive. Get some masking tape and accurately lay out where everything is going to sit. If all else fails, you could grow an ugly moustache and send the picture into Aperion :-)
Joe
If you can't have fun doing it, it's probably not worth doing.