Well 1 acre seems kind of small for even a 2920,(or even my 7610) and a snow blower is certainly over kill in Loudoun unless you have an extremely long drive way.
I've lived in Northern Virginia since 1975 and although we have gotten several big (for the area) snowfalls, a blade, at the most, seems what is needed for the area to remove snow, It's not like where I come from, Burlington Vt, where it snowed from October to May. And only 1 year since 1975 had LESS than 40", and several over 100".
Looking at the records
http://www.erh.noaa.gov/lwx/climate/iad/iadsnow.txt there's only about 5 yrs in the last 35 where we've had over 40" TOTAL. Last year was an anomaly.
I might have missed it but what was the limitation on your previous ride?
If you are still "hunting for a new house" I'd suggest waiting to see how much property you'll be getting, make the present tractor work and save until you KNOW what you need. The 3030 might be to small.
Good luck, and it's your money, but I spent my money on buying LAND first and tractor later.
Which is why I have about 400 acres in Mississippi and 75 acres in Vermont and only a
B7610 SO far.