Down south, they do not want fert with their pre-emergent; it would be too early.
Up north, fert with pre-emergent is the norm for good results, naturally it costs a bit more. Granular fert with slow release is best as it is longer lasting (usually). Do the weed control with a skid sprayer. Backpack is time-consuming and the weed control is not fully satisfactory. The best quality firm uses granular fert supplemented with blaket spray of weeds at least in early summer and fall. Back pack as needed during other rounds. You may have to use a non-2,4-D product to avoid going over the yearly limit. Perhaps use Horsepower for back pack sprays (non-2,4-D).