What is the problem you have with the current lawn? Weeds or just rough terrain? Have you tried anything to recover the current lawn? Overseed, aeration, etc...?
Good question before we can give advice.
Also, any irrigation or relying on Ma Nature? What type of seed are you planning? Looking for a green field or a manicured lawn?
You indicated that your soil test came back OK and that you planned to use a balanced fert so I would not recommend turning soil, you will just activate more weeds and lose fertility. Fall is the best time to overseed or plant a new lawn. Spring is a problem to get new seed established before the weeds since you will not be able to use a pre-emergant. You will be fighting crabgrass and broadleafs all summer again.
I suggest: scalp mow, aeration, power rake to open thatch and break up cores, top dress with top soil in areas that need filled and then top dress the entire field (I prefer cotton-burr compost). Then spread seed based on new lawn rates from the seed company. You can do all this during the winter and let the snow work in the seed. Then plan on overseeding again in late August or early Sept for you area (at least 6 weeks before your first frost).
I used a chain harrow after scalping on my yard this fall. Overseeded and composted a blend of 3 Tall Turf Fescue & 10% Blue Grass (Winning Colors Plus from Lebonon seed) with starter fert. Yard filled in nicely with the extended warm days this fall. Spring I will aerate and pre-em in April & May. I am not grooming 2 ac. though.
Good info at
"http://www.lawnsite.com"] Also, check your state conservation division for winter planting info and best seeds for your area. I got good pricing on seed from MFA (in Missouri). Check your farm assoc. Forget big box seed. Lesco is another good seed and fert supplier.