In reality you don't really NEED any of that stuff. The BIA is a AWESOME tool, but you don't need much more than that. The only tool I'd say was a must have is some kind of wire-cutters (they look like pliers, I got one in a dollar store), so that you can easily cut the binding wires to the length you need. Covers and pages are really only paper and chipboard that you are paying someone to cut for you. Why do that when I'm sure you already have a perfectly good paper trimmer of your own? Buy a few sheets of plain chipboard to cut down for covers from your LSS and you're set!
The Round-it-all is a corner rounder, available in 2 sizes, which can cut through chipboard. If you desperately need your chipboard to have round corners, go for it!

IHTH.