Looks mostly cosmetic...no??? I'd fix it and run it. Then if you want something better you have a runable useable sled to sell/trade.
Parting is a PITA for the most part...you might end up getting more money in the long run but it might take you a year to get it and the hassle of all the tire kickers blowing up your email asking for pictures of whatever even thought they have no intentions of buying anything is a waste of time.
I deal w/ Carl T. Rock snowmobile sale and service in Parish,NY they have great prices and will ship products, They might have a used hood. They have almost any parts you can think of and most parts in stock also. 315-625-7638