This project is really two projects in one. It is both a gardening project and a wireless project. But, as is true with any project, getting your materials will probably be the hardest part. This is because building can move along pretty fast once you have everything, but it's finding out you're missing the one crucial piece that always holds things up. Below is a list of web pages from my wiki with a list of all the parts you'll need. Go ahead and take a look, I've listed them with as much detail as I could and if I've left something out just let me know so I can add it to the list.
Various Parts Lists:
I highly recommend you buy a couple extra parts here and there. You'll find, as I did, that they come in handy when you make a mistake. For the majority of the parts nothing is particularly expensive so buying a few extra things won't hurt.