jd, the time and effort is reflected in the bills i leave my customers from a few hours work. plus your just doing apps so we have different goals for the year.$
put down a proper amount to make a difference right off the bat, more time for the post to get settled, customers like immediate results, leaves more time to do other things$ for them
your price might reflect your area's prices but what your doing is giving them more, which is good but.... is this a organic approach your selling or bridge, other.?
how are you handling weeds?
come fall schedule your topdressing in a row, bring on extra labor to knock it out.$$
so many projects $$ so little time...