I have a customer with a shaded lawn. Slightly weak centipede stand of grass. She wants fescue, instead. This is for the front lawn, only. Around 3 to 4-thousand sq feet. I have never replaced a centipede lawn, and I have no sodcutter available, even for rent. Here is my game plan, please add any corrections or comments you feel will help!! I will start by using roundup pro on all of the area. A day later I plan to till lightly(3-4 inches) and rake all grass out that I can. Then I will spray again and do the regular fert/seed routine. Might follow up with a third or half full roller. Look OK?