Well, Here is your program in a nutshell -- am I right?
Spring -- 20#/m (3-1-5) = .06-.02-1.0
June -- 15#/m (10-0-0) = 1.5-00-0
July -- 15#/m (10-0-0) = 1.5-00-0
Fall -- 15#/m(3-1-5) = .45-.01- .75
ANNUAL TOTAL NUTRIENTS = 3.5 - .03 - 1.75
Seems a little low on the potash. Also, 85% of its nitrogen is being applied in the Summer. It's slow release will help that (16 weeks I beleive) but I would still think you wouldn't want that much nitrogen being reelase in early summer.
Do you really need to overseed annually on all lawns?
Is 435.00 a realalistic price in your market? That over $100/app for a lawn that most would price at $30 with a conventional program.
My product cost are about $65.00/1000ft2. So basic program for 2500 ft2 is 65x2.5=$162.50+$60.00 aeration+$60.00 to overseed = $282.50 Therefore the program cost @ $435.00 less the $282.50 is $152.50 divided by 4 visits (minimum) gives me about $38.00 labor per visit. This includes the extra labour to deal with the weeds. (also fuel expenses). I understand the price is high, it is approx. double of anyone else. I am the only pesticide free company and I don't want to underprice myself to a point where I can't afford to service my customers properly.
Are you trying to avoid using manure-based products in your program? A similar nutrient program using manure-based products would run about $11.00 - 12.00 / M (excluding weed controls and grass seed).