I assume there may be a mulching plug with some chambering option for your deck . . if the goal is mulching. My Massey model 2315 mulching deck is a whole different animal than what kubota or other brands offer for their scut tractors. My 54 inch mmm deck has 6 blades on 3 shafts (a smaller blade mounted above a larger blade). I have no exhaust discharge chute . . So my deck is 54 inch and it takes about 55 inches total width of the deck . . which is narrower than 48 inch decks that have a side exhaust. Even in deeper grass it cuts well. Up to about 6.5 or 7 inch grass its still a single pass needed. More than that requires too passes especially in our blue grass which is very very dense.
My desire was a deck thatcould be narrower and at the same time not blow its contents into buildings or flow beds or rock gardens or etc. etc.. Its surprising how freeing this is . . not to mention safer for kids, pets, vehicles, buildings, or others in the yard.
Depending on your weather . . the block heater you installed is a smart move.
I'm also quite happy I got a quick attach for my bucket and forks to switch between. Even allows on my flat lawn property to cut grass without the bucket on but fel still in place. Nice thing is 60 seconds and the bucket is off