I'm getting ready for some work on my lawn or what's left of it, I live in St. Louis Mo. In the spring I put down a preemergent waited a while then spot sprayed what weeds were left, there are still some but not near as many. I'm planning on aerating and overseeding. When is the best time to do this and is there anything else I should do first? I will probably use a fescue blend, Is there any brand of seed that is better to use. Thanks Larry