We got a ton of snow last winter. I, growing up on a farm, am not new to the whole tractor thing. I have a cub Sc2400 which is roughly the same size as your 2610. 67PLY is right in saying you might want to reconsider making the bucket larger. When trying to push wet snow or even just a lot of snow, the tractor isn't heavy enough to compete. You'll just spin. Also, adding weight, in concept, would help. However, the problem with that idea is that the loader arms are mounted much higher than say, a dozer blade, and so there is a fulcrum effect where the resistance of the snow and the traction from the rear tires will want to raise the front on the tractor.... which, sucks. You can't stear and it's not the safest thing to do anyway. So, in my experience, you should not add weight to the back (like say, a back hoe) when pushing snow with a FEL because you'll just end up lifting the front off the ground. Wheel weights are a better option if you want to add weight.
I use my FEL for pushing snow because it's cheaper than buying a snow blower and we usually don't get as much snow as we did last winter. However, a FEL is not designed to be a replacement for a push blade. So, it has some definate down sides. Plus, these small tractors just don't have the overall mass to really push large volumes of snow.
As always, you can do what you want. I'll offer this advise to save you some trouble... If you want to move more snow than your bucket does now, do one of the following:
1. Buy a 3pt snowblower
2. Buy a 3pt or quick attach dozer blade
3. Buy a larger tractor.
Tacking on to your existing bucket won't solve the issues I've mentioned and, therefore, won't let you really move any more snow (mass wise) as you can now.