No real opinion on the pot but I'd probably go with a wider pot over tall and narrow. I'd actually just get the biggest one I could afford. I have an 8 gallon and wish I went larger.
For the chiller, if you want to look at it efficiency wise, the copper has a much better thermal conductivity than stainless steel. I also heard, I think it was from Midwest, that the copper chillers stay looking better than the Stainless steel ones. They're really easy to clean and get back to bright shiny copper with a little vinegar.
I'd consider making your own as you'll save a good bit of money. I wish I saw this thread before I bought a premade chiller. http://www.homebrewtalk.com/f51/imme...l-video-60522/