Get some rear weights and chains. You need them with that heavy blower on the front. Don't feed sticks into it. They will tear it up good. So will large rocks and chunks of curb (ask me how I know

). Make sure that both gear boxes have lube. They are expensive to repair. If you break an auger sheer bolt, use a grade 5 bolt. Augers are expensive too. Make sure you have a good belt, or a new one on hand. It takes a ton of power to run, make sure the 782's motor is ready. I haven't found an attachment yet that will lug down a twin and kill it as fast as a snowblower. Air the front tires up to 30psi. It's heavy and the higher pressure makes it easy to steer.
Have fun! The 450's are snow eating

. Once you shine up the impeller and chute, do not paint it. Coat it WD-40 for storage. Snow moves through it better when it's shiny bare, just like a plow.