There are several PDI check lists available here. Here is one example http://www.forestriverforums.com/for...0&d=1366643131
You can search for more. Take notes or video any procedures you think you may forget. Make sure they show you how everything works. If winterized ask them to unwinterize ( watch this so you can do it). The main thing to remember is do not sign any paperwork until you are comfortable everything works. Don't accept " Take it today any you can bring it back later for warranty repair" Spring is a very busy time for dealers and you may have to wait months to get warranty work done once they have your money.
Don't sweat the small stuff , go enjoy it that's why you are buying it,