OP, with 1400 feet of driveway, so long as you're willing to keep ahead of the storm by plowing every 6" to 8", 25 hp with an FEL and a 6' back blade is all the tractor you'll need. And, if you love hours of seat time and don't mind lots of loader work, you can wait til the storm's over. :laughing: BUT, if you expect to be able to plow 12" to 15" of wet snow at a time, I'll almost guarantee you'll be wishing you went bigger and heavier two years from now.
Just a for instance. My Kubota B2150HST (22 hp) with big, filled, rear turf tires, a 54" FEL and a 6' rear blade is a snow-moving machine. Maybe around 2800 lbs with FEL and blade. For 20 years I maintained nearly a mile of crusher-run drive with it. But anything over 6" of heavy wet snow was a whole lot of work. If your budget allows for it, I'd think about going bigger. Also, for tires on rough ice or hard-pack snow, I'm a big fan of heavy-lugged turf tires. Some of the patterns today are quite aggressive.