You have one super tractor Coop! Power is great & uses are endless. Rear blade is no problem for it. Fluid fill the rear tires & add some cast iron wheel weights and the beast will do most anything within reason. The 2 speed differential is great too. Put it in low for heavy work, high for mowing/hauling. Some cat-1 items can be used, but would require weighting the tractor up front to keep from popping wheelies, and require adapting the implement to cat-0 pins. I have a modified 1650, and a 1655. The 1655 is now an 1855 after installing an 18hp Onan, and it is a dedicated front end loader tractor. With loader & all the weights, it scales around 1700+ pounds & can dig & push dirt like mad. They can pull a 12" garden plow easily too, and when soil is right, I pull twin 10" plows with my "2055"...(modified 1650). Not much they can't do as a matter of fact.
Oops...forgot to say....Welcome to GTT!