About the mower: I have owned both and feel that the MMM does a better job of mowing grass. The Kubota MMM decks are the best I've seen for toughness, durability, belt lasting forever, etc. They are not cheap and the hanging linkage takes some time to install. I found one Used last year and if you persist on Craigs List and the Orange forum , etc. you should find one. Front PTO and having that really robust and working well is normally only found on much larger tractors. Very common in Europe but not here. You COULD get a PTO driven hyd pump and rig a front 3pt hitch and PTO combo [there are companies selling a kit for that] driven with the higher flow from the rear pto pump. You'd have to really want to BAD and it would be costly. Issues include rotation direction, gearing, etc. And giving up the FEL. Not worth it.
About the snowblower: As diesel suggested, Kubota sells a front mount snowblower and the contraption required to mount it, run the shaft and u-joints from the mid PTO, etc. If you do it that is the way to go. Also costly. Search the threads in TBN and you'll find quite a few discussing the various wonders and maladies of the Kubota front blower. In my view they are not worth it. Precludes using the FEL for one thing. I recommend finding a "pull forward" style snowblower which solves 90% of your stiffneck and all the reports I have seen for them are good. That way you can run with both the FEL and the fwd pulling snowblower with a lot of flexibility. Some point to the limitation on how close to a building you can get with that style blower (maybe 4 feet?) but whatever that is, you can back drag that snow away from the building with the FEL bucket.