You’re gonna need an external firewire storage device: I like the “G-Drive” 500gig.
DV deck: Sony DSR-45
External speakers: Take your pick. What matters to you? Size or sound? For good sound, but fairly large size I like the Tapco S5’s.
Small behringer mixer… really just a volume control.
External keyboard and three button mouse: Logic key and Kensington Mouse.
For serious editing, I’d add a large screen ( 23″ cinema display).
With this list, you’ll still be under $10K.
Mark