Your best bet over everything is just to get an overseeder. They are pricey though. This is really the only way to realistically get good growth of an existing field. With the little bit of ground you have I would rent one for the weekend. You just can't beat a good overseeder though. All you really have to do there is just make sure your soil is good, ph and fertilizer and plant it.
The second option would be to harrow it really good, broadcast spread seed, and harrow again.
With bare ground the overseeder will work as well.
Second best would be to disc the ground up real good. Then harrow it smooth, broadcast your seed, and harrow again. Anytime you can make a nice seed bed you are going to be way ahead on the germination game.
Depending on where you live it's probably too late to do it this fall. You can plant after Nov. 15th or wait until spring. I'd definitely go over the areas you plan to plant now with your aerator. This will get your soil worked up some before you plant.
The third option would be to get a regular seed drill. These are usually from 10-30'. You can use them just like an overseeder. Best thing about them is that they are alot cheaper if you buy an older one. You can get one in decent shape for $1500-$3000. Problem with this is you kind of have to know what you are doing with one a little more to get them setup right. The overseeder are pretty simple.
Quigley,
Yes the harrow would work to knock down the weeds but you're too late for next year. Those weeds are only annuals. What you need to do is prevent them from going to seed. Best way to do this is keep mowing over the year before they have a chance to go to seed. Spray 2-4D in the early summer late spring to kill all that are coming up. You will need to do this for a few years to get all the weeds killed out from all the seeds in the ground. Usually after a few years the grass will take back over and not allow the weeds to come in.
