You will have to travel slow with a 30 foot boom for a 2.2 gallon pump to keep up your pressure.
Which means you will have to also use very small nozzles that will cause more plugging problems.
I don"t think the 12v 2.2 is what you want for a field sprayer. It will not last for long with constant flow. Then if you need agitation, depending on the chemical you use, you will not have enough volume for agitation.