@mg448
I live in NW PA, also with ~700' gravel driveway. I've got a 520H Wheel horse with a 60" mowing deck and 48" snow-blower. It's a great combo for lawn and snow. I've found it to be durable, mows well (though not as fast as a zero-turn), affordable (I got the tractor and deck for $1000 paid $400 for the blower and put new ATV tires on it this year ~$150). Parts are still available when needed but I haven't needed anything other than belt for mower. You can get soft cabs for them if you don't like snow blowing into your face. I've also got a 24HP Yanmar but it's hard on the lawn and not a great starter in the winter- so it's relegated to FEL duties, box blading, brush-hogging. Also purchased that used ($2500). None of it's new. In fact, all of it's old, but it all works well and leaves money for other things.
If you went this route and it didn't work out for snow blowing you could keep it as the lawn mower or sell the kit and get out of it what you paid and move on to something bigger, shiner, and fancier.
I recognize I'm probably the only one that will recommend this combo, but it's been working well for me the last 3 years. I also didn't have the same budget you do. If I did I'd probably be looking for a used ~25 HP 4WD tractor with back blade and FEL and a lawn tractor. It just turns out that my garden tractor does much better in winter than my 'big' tractor.
Just another option/opinion.