Congrats on the purchase....nice ride. I have the same sled except for an F6 and I love it. Most common oil run is either Arctic Cat synthetic (recommended from factory) or Amsoil. Both will do the job....IMO, many oils will do the job.....pick one that is easy for you to buy where you ride.
I'd clean the valves, change the plugs if needed and maybe change the chaincase oil. Check the chain tension (very easy to do) and check to see if your belt needs replacing.
I second the above statement. I use Ipone and love it compared to the Cat's oil....It's ash free meaning very less crud on the power valves as well a nice strawberry smell....Don't forget to give us some pics of your new toy!!!!!! Congrats as well :thumbsup: