AHarris-IMHO as a CTD owner (past & present) and a "user" of several GMC & Furd trucks, I highly recommend you get the Snow Plow Prep Group if you'll be doing ANY plowing. Especially, in Northern Wisconsin.
The "package" used to include heavier front suspension springs than "standard", but with the changes that have been made over the years to address the "extra weight" associated with the diesel engines being up front, are no longer necessary to be able to support the use of a standard snow plow.
On a Furd or Chevy/GMC, you can still add the "Heavy-Duty Front Suspension Package". Although this is mainly for folks that need to put something extra-heavy on the front, like a 500-plus pound bumper replacement/brush guard/grill guard w/ a winch, etc. (read as MUCH heavier than a standard weight bumper guard w/ winch).
IMHO, you don't really need the suspension on a Ram, but the increased alternator output would help a bunch if you're plowing a smaller area.
Mark