i have a chance to bid a lawn install for a small park that is going to be built in my town. i have done lawn installs before just nothing this big, alomost 12 acres. all it needs is harley raked and seed, fert and strawed. no topsoil or anything. they just want some grass nothing fancy or anything. i have figured it out and i am at 5.8 cents per foot right now. does that sound fair to high, to low?