go for the 6800 OTD, but work em way down from there. Still too much, IMHO. Make sure that the bike has not been dropped and re-touched up. Also make sure that the motor is the original one.
Also see if you can take a look at the subframe...ask if a lot of two-up was done on it. Subframe was aluminum for 99 and that year, so the welds have a tendency to get cracked. You don't want that happening. If the subframe is ok, that's cool. If not, you can use that to get them to lower their price and you can always buy a newer subframe.
Another thing to look out for are the fuel lines. They have a tendency to get kinked. If you pick it up, I suggest changing to steel-braided ones quickly. You can also check the fuel pump. Sometimes bits an pieces of the metal get through the filter.
Then you have your starter issues. No real biggie, as long as you take care of it right away. Just replace with an 01 and newer model up. Ya might also need to check your oil pump....again an easy fix. Just replace it...
All these things....if ya replace them, ya got yerself a solid bike that should last ya awhile. Hope this helps.