I dislike using a backblade for snow simply because driving over snow to pack it down before removal seems foolish.
That said, they are handy for gravel/stone restoration. Unless the surface is frozen, they will dig into an unpaved surface.
Suggest skid shoes are a must. Some folks have cut a slit in 1-1/2 schedule 40 pipe and tack welded it over the cutting edge. Not done this but seems practical.
I have a 6 ft blade, it weighs 400+ lbs and is rather light if doing more than spreading loose material. Note that when angled, a five ft. Blade will be less width than tractor, that is a negative.
Suggest a blade that tilts and also angles. Mine will offset as well. Purchase W/O these features often causes regrets.
The 3 point on my little ford must be adjusted for the BB. The lift rod saddles must be placed in the furthest lower link holes to obtain max height, so blade is in optimum position.
Without a hydraulic top link, you will be forever adjusting a manual top link.
You stated a snow blower is primary snow tool ?? Or The FEL ??
The moldboard on most BB's is too short for snow (cat 1) and overflows quickly.
Your tractor is cat 1 or cat 0 ????
Good luck, stuff to consider.