Boom sprayer roller pump??

I just bought a old century 500 gallon pull sprayer. It has a 30' boom but at one time it was longer. They took the end section on each side off. It had a 4 roller pump on it, but I told the guy just keep it since I worked out a cheaper deal on they sprayer without the pump. I'm thinking about going back to 42' booms. My question is will a 8 roller pump be enough to power a 42' boom at 30 psi and on 20" nozzle spacing?

Boom sprayer roller pump??