Welcome to the site; there are a lot of very knowledgeable people here who have helped me to know and enjoy my Viper. You will also read negative posts about the Vipers, and the issues that people have had with them, but overall, they are a great sled. I now have three Vipers in my trailer, and adding them all together there are about 18,000 miles of great riding represented by those three sleds.
Free advice is generally worth what you pay for it, but the one modification which has most contributed to our enjoyment of our Vipers was to get rid of the Tuner skis. There are lots of options, and we all have our favorite combinations, but the bottom line is that when you do ride your sled, you probably will find that, depending upon snow conditions, the Tuners push badly in the corners. Take heart, with the right skis and carbides, you can have your Viper running like a freight train on rails.
