Welcome to the group. I was in a similar situation a couple of years ago and was torn between a new Road Glide or a 00 SERG. I went with the 00 and have been very happy with it and would recommend you buy it. Its a very complete bike with features not found on the new ones that can add up expenses real quick. Price out the Tour Pack, docking hardware, passenger back rest, rider back rest, lowers, and all the chrome goodies you won't find on a new bike and you will find it is a great deal. The new SE's overheat, have gasket problems, and still need most of the stuff mentioned above. I have ridden many miles with friends with the newer SE's and believe me there is no issue with power the 00's will pull with any new stock SE.
If you look at a 01 the only difference is the CD deck in the Tour Pack (bad idea) and chrome rims. The manuals, shark fin end caps and cover show up on ebay every once in a while and I have managed to stock replacements for them all.
All twin cams have problems with the cam chain tensioners so replace them with gear driven cams at 25K or so and I don't think you will ever regret purchasing a low mile 00 SERG. The new ones are great bikes and sure a six speed, bigger tank, and abs are nice but not enough for me to pull the trigger for one. Maybe when they come out with a wet motor I'll change my mind. Doc