reL UPM comments.
I have SSQA on my BX23S and there are 'adapter plates' for it as SSQA is a standard. That's the main reason SSQA exists ,so that we can easily 'mix and match' implements to tractors.
I checked the spces at TD, at that tractor/loader can easily lift a 500# snowblower, so unsure why you advise against it. Pretty sure lots have moved heavier things like rocks, logs, bales, etc.
SSQA plates may be a standard but they are used by both compact tractors and skid steers / track loaders. The tractor FEL is a very different thing that the front lift arms on a track loader. Most implements are sized specifically for tractor or track loader use. There are many hydraulic powered implements that are SSQA mounted that are really just for track loader use due to weight or flow requirements.
I would suggest that a front SSQA 3pt adaptor plate is sold mainly for skid steer / track loader use. I guess 3 pt attachments such as a land leveler, rake or rear blade could all be used this way.
The concept of a SSQA adapter plate and a rear snow blower does not make sense, it puts the blower far too forward to be practically used, any uneven ground would result in too much vertical movement to make things unmanageable. The weight also shifts forward greatly reducing FEL load capacity, I would suggest that a L3301 would not lift a 120 lb adaptor plate with a 500 lb rear snow blower mounted on the loader, it's center of mass would be 36" or more from the pins. To travel with this load has a lot of potential for FEL damage. It's great to read the lift capacity on paper but there are many faxctors to consider such as how far forward the load is. The inertia from a bump could easily make the tractor totally unstable with a load weight very close to the tractor FEL capacity.
As seen above the solution is to always mount a front snow blower on a dedicated frame or mounts that are attached to the main tractor frame very close to the front of the tractor, none of these frames are carried by the FEL. Thanks to Dave for sharing the great solutions that people come up with.
Just trying to be practical hope the OP finds a good solution that works for them. The last photo above looks to be a real solution as it is frame mounted to the front of the tractor (not FEL) and is rear pto driven.