Troybuilt which HorsePower to Buy?

The Wife and I are looking to buy a new mower for our new house. We saw 2 troy-bilt models that are identical except for the horsepower. One is 18.5 HP for $1300 and the other is 21.5 HP for $1500 with free $100 Cart, Our lot is completely flat so a vote towards the 18.5. But also we want to push-blade the snow off the concrete driveway, again flat, come next winter. My question is will the 18.5 be enough kick, for pushing snow on a flat surface that may reach a maximum depth of 8 inches in most cases, or should I go the extra $200 for the 21.5? By the way we intend to purchase the snow blade at the same time at a cost of $300. We can't seem to make our minds on this, and have till Sunday to get good financing on it.
SO 18.5 = 1300 or 21.5 = 1500 + Blade= 300 Blade= 300 + No Cart= 0 Cart= FREE ($100) -------------------------------------------- TOTALS $1600 $1800 ($1900 Value)
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SAM >> samuelREMOVE snipped-for-privacy@myrealbox.com
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if the $200 is not a factor get the 21.5. You can never have too much power
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