Overall, that seems like not a bad deal. I could cut the difference more by dropping the RAM (rationalizing that I could add more later). That would make about a $300 shift, so more drive and better processor for $1,400 more.
Still, I'm kinda nervous about dropping about $4,000 on a laptop (and various bits). So I haven't decided to place the order on-line or run off to the Apple store at the Mall of America tomorrow just yet.