I totally get the logic behind having one piece of equipment for both winter and summer use....less storage space needed, only one engine to maintain, etc. However, the flip side of that is the need to switch attachments back and forth. (snowblade vs. mower deck) And while it should only need to happen twice a year, it's still going to involve laying down beside/under the tractor and wrestling steel around. My 74 yr old father said no way, and bought a separate, self propelled snowblower. He much prefers it this way. And if you use non-alcohol fuel, run a good, marine grade fuel stabilizer, and most importantly just start everything once a month year-round, you shouldn't have any running issues even after extended storage.
10,000 sq ft calls for a 42-48" mower deck, depending upon obstacles (trees, flower beds, yard ornamentation), and a must have would a true, hydrostatic trans.
Deere is great, but local support should not be discounted. If the local dealer sells another brand, is reputable and longstanding in the community, you shouldn't overlook their offerings.
