2013 was the year AC changed (in mid-year) and stopped using the wet clutch. Some of the suggestions you might get would be specific to the early or late machines, so you might add that bit of info about your new ride. The 2013.5 machine usually has an un-painted aluminum clutch cover. It also says "Team Clutches" or something similar on the cover. The earlier machines typically have a black clutch cover.
Welcome Ddelisle, congrats. First mod should be harnesses and a harness bar. From there, whatever your budget can handle. Try and get in the habit of changing the fluids in both the front and rear diff at least twice a year, more if you're hard on your machine, or the terrain is challenging. Check wheel bearings, ball joints, and especially the bolts / nuts that hold on the rear trailing arms to the frame. Even if they look good, I recommend changing them out, they are possibly stressed.