I've already gotten $400 via paypal. That'll just about do it. My thoughts are that 1TB is sufficient, and I need it to have a Firewire 400/800 connection to the server. Everything else is too slow. I am seeing some with USB, Firewire and Firewire 800 which would be great for all kinds of uses.

Thanks to everyone who contributed, and thanks Repaire for the idea.