Hi, congrats on your purchase
Studs, you'll be fine with that on ice, stock track is fine on harder packed trails, falls flat on it's face once it's loose or deep. Difference in my son's '07 with a 1.25 Ripsaw is huge.
Skis, SLP-SLT's are a perfect fit, running them on ours, great bang for the dollars spent. If even more bite is what your after, opt for Simmons Gen III's, everything the SLT's are and then some but do scrub a lil top end speed off along with a tic of fuel mileage.
Now for your must do mod, stock clutching is horrific, sled is a toad with AC's stock set up. BMP Stage II kit (with Dalton adjustable wts) PLUS a Dalton step shim under the spider will totally transform it's performance. Never seen a sled come so alive, best money you'll ever spend.
Be sure to add a bolt through the lower control arms to prevent the sway bar links from coming off. Also put a hose clamp around the plastic sleeve on the bar itself or it'll wiggle n eventually fall off.
Thirsty lil bugger on oil but oil's cheap n engines are expensive. Yes the pump could be cut back but it likes rpm n a lil extra oil is never a bad thing.