If you are going to work it in, why spend the money on agrotain? Unless there is no moisture whatsoever in the ground, I see no need for that.
Drilling is always better than broadcasting.
We plant 1200-1500 acres of wheat every fall to harvest. We both drill and broadcast to get I've the acres quicker. The drilled almost always has a better stand and a little better yield. Some years when you get the perfect weather there is not much difference.
We spread the wheat on loose ground, this hit it with a heavy pass of field cultivatior with points, not sweeps (always put the anydrous on this pass)
Then hit it again with a 60' 16 bar harrow.