One of the joys of not being in a neighborhood association is not having to gaf about what kind of green stuff is coming out of the ground. As long as it isn't tall enough to attract the health department, I don't care what happens out there.
I use to do the whole 9 yards on the lawn, adding tons of lime to get my ph right on nothing but red clay, pre-emergents, herbicides, fungicides, fertilizer, adding organic material, reseeding with the best turf type fescues, dethatching, aerating, etc. and I did it all myself. I had a little over an acre that I did all that to, and let the other acre down the hill do whatever it was going to do.
After a couple of really dry Summers, a lot of my yard died, to be replaced by weeds, and I said to hell with it. I mow whatever comes up. I decided that without irrigation, it was pointless, and I wasn't going to irrigate. We are also in a transition zone between cool weather grasses (like fescue) and warm weather grasses (like Bermuda and Zoysia) here in East Tennessee. You have to decide if you want your lawn to look nice in the hot months or in the cold months, unless you have water.
It is really hard to get fescue to germinate and live in such a small window of time. You sow it in the Spring, and it germinates, then dies in the Summer heat because it isn't well established. You sow it in the Fall, and if you are a little early, it gets dry in October and dies. You sow in late Fall, and it turns cold early and freezes it before it gets established. I also have never had luck with dormant seeding either. In my opinion , you need to get lucky with the rain and the temperatures to establish a nice fescue lawn, or you have to irrigate.