Hello and thank you in advance! We purchased grazon for our yard, horse, and cow pastures. We are targeting creeping indigo as well as thistle. We will be applying the product with a tow behind fimco sprayer. Looking to find out dosage/application recommendations. The Simco is a 60 gallon tank and sprays 3.8 gallons per minute at 45 psi. I've read that the dosage is 34 oz per 100 gallons (for the most potent level). So I am wondering how much I add to 60 gallons and what speed I should drive when spraying?