New hose - period (I would also be a bit leary about a dealer who wants to give you a 'used' hose, yuck). And I agree - trade up to Rhinonflex and make sure you have a clear elbow so you can monitor waste dumps. Battery disconnect, electric brake controller, 3/4" socket for your stabilizers (if you're going to use a rechargeable drill, 50amp adapter and a 30amp to 112 volt adapter as well. One thing that I never bought, but have been very seriously thinking about it for a few months (bought my new TT in Feb), are those sewer hose levelers that even out the slope from your TT to the sewer line.