It seems to me (unless you can just get a PC laptop way cheaper) that the new Intel Mac notebooks offer the best of both worlds, a fully funtional windows PC as well as a chance to try the OS X experience, just hold down the option key when you start up and tell it which OS to use. Other then maxing out the memory they come with all the ports etc that you need including ethernet and wireless/bluetooth. I haven't seen any bundles with FCP or Office at this point but they may be out there. I just bought 4 full version units of Mac office 2004 for work for $145 so SW wise it won't be too bad, everything else you need is normally bundled. Here's where I would check: http://www.pcprices.net/
Check out the refurbs and put as much RAM as you can afford as OS X loves memory. Putting memory into the notebooks is usually pretty easy so I wouldn't buy the RAM from Apple.
Joe I always thought you'd be a big Mac fan if you ever had a chance to really give one a try.