This really depends. If you're working on driveways on small side streets, yes... you may find the truck to be a bit long. If you've got a decent size driveway to do, and enough street... then it's not so bad.
Not really, it's just tighter in small places which means more wiggling. With a salter on back it's as long as I want. I've plowed with Ext. Cab shortboxes for the last 11 yrs. & have no complaint . I perfer the Ext Cab as it does everything I need all year round. I don't do but 10 drives anymore as I make 90% of my $$$$$ on big parking lots.
My buddy does 50 drives plowing with a Ext. Cab long box with salter & to me it's too long but to each his own.
Just a thought, go test drive 1 as their are some new & used 1's on the lots.