24d, dicambia, triclopyr

I have concentrates of the above chemicals. I want to make a mixture to spray over my lawn to kill sida and whitehead broom, these are coming up all over my lawn. I have some old mowed-over whitehead where the above ground plant is only one inch but the root is a foot in length and 1/2 inch in diameter. These are very tough to kill.

After I mix up the soultion in the 4 gallon sprayer Im going to end up with

24d- 0.66%

dicambia- 0.25%

triclopyr- 0.24%

I came up with these as the instructions only tell you how much in weight you need to spray per acre. Ill be spraying about 0.25-0.3 acres. I went a little weak on each one since Im teaming these chemicals.

Anyone think I should change any of these concentrations?

Im only going to spray on the irrigated area where I have active growth.

Thanks in advance.