Hi Dave:
I don't know what snowblower Kubota supplied for the F2100/F2400. Mine was made by Van Eyl and is 50" wide. I use a rule of thumb of 5HP per foot of width so a F2400 should be able to handle a snowblower up to about 5' in wide. However, when the snow is really heavy and deep enough, my tractor really works to handle the snow. I just go a little slower in such conditions.
My snowblower has hydraulic chute rotation and hydraulic discharge angling so I don't know about the electric rotator, but Kubota does use it on a lot of snowblowers so I don't think there should be a problem. There is a spare circuit coming out of the fuse box under the seat, I believe it is a red wire with a female bullet connector on it so you could use that. I use that feed to power my cab which includes four work lights, a blue strobe light, the heater blower motor, the windshield wiper and the interior cab light.
The price for a snowblower really depends on what kind of condition it is in, could be anywhere from $500 to $2000. There are two important aspects to a snowblower - the impeller dishcarge velocity and the gap between the impeller and the drum. The impeller on my snowblower is 20" in diameter which gives me a discharge velocity of about 5200 feet/min at 2000 engine rpm or 1000 pto rpm in low range. This gives me about a 100 foot throw in really dry snow and when the gap between the impeller and the drum is at the ideal, about 0.020" from BDC to the point of discharge. However the throw distance drops off significantly as the snow gets wetter and the gap between the impeller and the drum increases. It can get down to about 30 feet in really wet snow. When the gap between the impeller and the drum gets worn to the point that the impeller won't pick up a quarter, the tips of the impeller need to be rebuilt and then ground to fit the drum (0.020" clearance). The drum can also get bellied out from stones which also increases the gap between the impeller and the drum. This had happened to the drum on my snowblower before I bought it so I welded a 0.125" sleeve inside the drum and ground the impeller tips to 0.020" tolerance. If you rebuild the impeller tips you neeed to check the balance of the impeller.
Hope this helps. /forums/images/graemlins/laugh.gif