What's the mileage - $4,000 seems like about the right starting place. I just paid $3,500 for my '02 with 19k on it, all stock except for the OE Sissybar and windscreen - both of which are already listed in the classifieds on here. I considered that a fair price with the shopping I did, there are certainly older ones out there, but this one is in great condition, appears well cared for, and has all of the OE upgrades from over the years. It was listed at $3,999 and I was able to grind the dealership down some.
I agree with these guys, motorcycles are such seasonal items, you can't expect good money on them from November - March. Just like all the Camaro's I've had over the years, I try to buy them in the winter, enjoy them for a year or two, and then sell them in the spring when everybodies got their tax money and the itch for a new toy.
Parting it out probably would net you a bit more in the long run dollar for dollar, but it's definitely a bunch of work - not just turning the wrenches, but the packing and shipping is the annoying part to me. Besides, as an enthusiast, wouldn't you rather have somebody else enjoy the beautiful max you've put together?