My advise is go buy a good set of tire chains and put fluid in the tires. I have a cabbed CT445 with about 300 hours and my biggest complaint is the ass end was too light when using the loader anywhere near capacity. I always had to put a 3pt implement on to keep the ass end on the ground. Fluid in the tires helped immensely. I would say chains for the rears are less necessary especially with the FWA however when doing snow removal with either the 3pt blower, loader, or snow pusher, you can do damn near anything you want in 2wd with chains. Without, you have to run FWA all of the time with the R4 industrial tires. If I ever buy a brand new one, I may consider turf tires for what I use it for, which is primarily snow removal, food plot, and general yard work.
Not sure if yours came with one but I did add a second hydraulic to the rear which is nice for the blower for spout control so you and spin it and run the deflector. Also works nice to add a hydraulic top link or if you do a lot if box blade or angle blade work or go with a top and tilt kit for that. I may at some point add the tilt kit but that's less important to me.
Otherwise, knock on wood, mine has been flawless. Between the last tractor and now this one I have accumulated quite a few attachments which make living in the country a hell of a lot easier than I used to do it with the Old Allis D17 . Have bucket, pallet forks, and 98" snow pusher for the loader. For the 3pt I have a 72" tiller, angle blade, 72" box blade, a 84" snow blower, and cultivator & harrow. overall, I wish i would've bought one 10-years before I did, I had no idea what I was missing out on! To move snow with a cup of coffee in hand, in a t-shirt, and with the blue tooth radio is pretty damn nice.