Yep I'd go with the Home Depot Cooler, it's what I've been using for a few years now with great success. As far as the fittings.. I've got stainless, just felt it was better at the time that I was buying the stuff, BUT, I'm not so sure now. Really not sure you can go wrong with the bronze as long as you keep everything clean.
The Blichmann will be fantastic, wish I had one! But until you build up to pumps and such the cooler will work perfectly.