amending soil topseeding topdressing aerating and OLCFTCAL

I have been less that C and L lately.
aerated the lawn w my friends big lawn airator. I've seen many mixed reviews, but since my established lawn is dwarf fescue rather than tall fescue and it is just recovering....kinda patchy I decided to overseed with tall fescue and I figured plugging the lawn would loosen things a bit and the holes would let seeds and added compost (i used mostly worm) get a bit deeper. So I have seeded 5 pounds ( about 1/2 recommended for establishing a new lawn) added atop this about 20 cubic yards of worm castings and organic soil mix (damnit i did have wood chips in it....kinda false advertising on the gardner and bloom bag. And will lbe adding 10 50 lbs bags of sand as well. What i slarted with was beautiful black dirt/soil created over time by the San loorenzo river, but that compacts too readily for our high traffic lawn as it dries. I have been following OLCFTCAL practices for the past 3 years since bringing in the just a bit too dainty dwarf fescue before realizing its taller sibling should be a better bet.
         Okay questions, number one being at what point can I spread corn gluten weed killer? I know I have just created a tasty place for weedage, and that this corn somehow inhibits seeds from germinating. URGENT I SUPPOSE: CAN I SPREAD IT NOW ATOP ALL ASSUMING THE SEEDS ARE BELOW ENOUGH SOIL AND HEARTY ENOUGH TO MAKE IT DESPITE THE NATURAL INHIBITOR? Have I spred oo much material at one time for my existing lawn to mix in? ANd though i know i can figure this somewhere else on these pages how long for the grass seeds to geminate and be strong enough to tread on in other word how long shall i keep the lawn moist.....right now its still supersaturated due to the massive rains weve had in coastal central california. a plus thoug looks like sunny weather ahead so i will have to water.. in other words how long before i can open the lawn?

Corn gluten stuff:  well, nobody else said anything, so here's my answer:  don't use it.  Return it.  Get your money back and buy some ice cream.  Then sit on your lawn and eat the ice cream. 

Plus, if you put the corn gluten stuff down now,  it will make your new grass not germinate.  That's how it works!

I've talked about the corn gluten stuff in the past, but it's been a while, so I'll mention it again. 

The corn gluten stuff tells seeds to not germinate.  But your soil is bombarded with new seeds all the time.  So if you use the corn gluten meal stuff for three years and then stop, you will have three times more weeds wanting to start something on your lawn. 

I really think the corn gluten meal stuff is the wrong way to go.  If you have a tall, thick turf, then the seeds germinate and then they don't get enough sun and/or water - then they die.  Cheap and lazy.