Aerating is more for the roots than a seed bed. Your power raking is going to accomplish your ends w/out aeration at all.
Actually the concept behind dormant seeding is that the seed is worked into the soil under the snow, especially as the snow melts and freezes and the soil heaves and contracts.
I believe it is a good idea to have the dead grass clippings in the base to serve as a mulch for the seed.
Larger open areas of bare soil should be ripped open and the seed having an opportunity to imbed in the ruts. Powerseeding would be your best option then.
There is no best option out there, it all depends on the soil surface, climate, etc.
Now that I know that clay's texture(platelets) has nothing to do with water infiltration, percolation, or drainage,,, I wonder what does...