Answers to questions!
1. They will be panel mounted pots. The kit comes with wire for the pots, but not wire for anything else, so you need to have your own wire. (I'm working on finding the right wire to include with kits. Haven't found it yet.)
2. heuermh, thank you for your feedback about my power page. I just get so excited when I finally understand something that sometimes it all comes out at once instead of being neatly organized. Let me sum it up for you. Either use 4 AA batteries (or 4 C cells or 4 D cells, etc.), or use a 5 volt DC switching regulator wall plug. You'll know it's 5 volts DC because it says 5 volts DC on it. And you'll know it's a switching regulator because it will be very light weight instead of heavy like a transformer wall plug. (edit: make sure it can deliver at least 500ma.)
If you don't like either of those options then you can wade through the power page. Or ask me questions.
Ax-man has some good options for 4 or 6 cell battery holders, or at least they did last time I was there.