What type of gravel are you talking about? Is it 3/4" like under a concrete pour, or modified, mixed with various smaller sizes and stone dust?
You should prepare the drive for winter by leveling, raking, picking out larger stones. Like others, I leave a couple of inches of snow after the first storm and drive on it. Let it freeze and pack down for a solid base. It's not until the last storm of the season that I may throw a few stones when that frozen base gets soft.
I plow anything under 6" with garden tractor and 54" blade. Larger storms get blown with 2 stage 3pt blower which has a chain driven auger.(typical)Also blow back the banks when the plow becomes useless.
I don't know but maybe the gearbox driven augers have weaker shear pins to protect them. I have never broken either shear pin.
Your adjustable wheels on your blower look great and should work fine. Not sure why your impeller fan housing looks like you backed into a 2 yard pile of gravel.
Possibly a box blade or rake would be a good idea to prep for winter.