Congrats on the New Toy.
When looking towards exhaust there are 2 words, Stainless Steel. You get what you pay for and if rust is prevelant in your area SS will keep that under control.
Look at the STS turbo instead of the supercharger. You can get the power, ease of self installation, and the biggest - MPG gain.
When I was looking for my beast it was cheaper to get the truck with Bose, XM, On-Star, dealer installed folding mirrors and buckets than the folding mirrors and 40-20-40 seat. Go figure the discounts would actually help me. Southwest discount and Safe and Sound dicount made it $500 cheaper when all was said and done when both have the Performance Package (AKA 345 hp 2wd power block).
Again Congrats and enjoy before Gas becomes a Museum item....