Hi, I'm not sure how much snow you get? You mention 6-12 at any one time with up to 18. Does it snow frequently?
I get a bunch of snow here in NH.
My drive is 250 foot with sllight uphill (coming towards house).
I've never used chains on my tractors, only my riding lawn mower which had a blower.
From my experience, the best set up has been a 16HP ariens lawn tractor, with chains, rear weight and 36 inch two stage snow blower. That machine would throw the snow 35 feet easy.
I sold the machine and miss it.
I have a plow truck and my kioti TLB, as well as a 32 inch 12 hp walk behind blower. I've also got a little wheel horse 7hp tractor with single stage blower (currently not running, rehab project).
Nothing, but nothing is better at clearing snow than a snowblower. The huge advantage is it throws the snow up and out of the way, no snow banks to deal with.
The big negative to the plow truck is that plows create snowbanks and I can quicky run out of room at the top of my driveway. Also not as good as snow blower at getting into tight places.
The negative to the tractor is a loader bucket fills quickly with snow. The positive is the cutting edge gets right down to the pavement.
The thing I liked a lot about my ariens was it was small enough to get into every corner but large enough to clear the driveway quickly and throw the snow a mile.
I rarely use my plow truck because of the snowbank issue.
Because my driveway is relatively short, I think the absolute best set up for me would be rear threepoint blower and loader for final clean up work.
I've never tried a rear blade.
Chains would make a big difference coming up my hill, just has not been a large enough problem to require yet.
Joel