Since you are posting these questions on the Organic Lawn Care Forum, are we to assume you do not want to apply synthetic fertilizers and pesticides? If so, the best thing you can do is realize results will come slower with organic methods, but in the long run the results will equal that seen with conventional lawn care.
If you want to be organic, then live with the lawn you have for this summer and begin to make improvements this fall. Since you seem to be a "Do it yourself" person, you may want to read Paul Tukey's book http://www.safelawns.org/blog/shop/t...n-care-manual/
I don't agree with everything in it, but then I don't agree with everything I've said over the years.
BTW, you stated that you are east of Philly, so you're in NJ?