You live in PA.... loads of freeze/thaw cycles. Meaning the ground will be mushy underneath your snow a lot.
A snow pusher box is going to take all of your gravel and leave it in piles wherever you stop pushing.
Backblade works fine for my 1000' gravel driveway. I swing it around to backwards when the gravel is soft and loose under the snow. Eventually I'd rather have an SSQA front blade on my loader, but it's not an urgent need when we only get 40-60" of snow annually and I only have to plow 4 or 5 times. If I do get a front blade, it will need to have some big skid shoes on it to prevent it from tossing all my loose gravel.
Does your 2610 have third function hydraulics?