Driveway Stripes and nozzle tips Surface Cleaner

Never thought about renting a machine. Very smart move there!

I’m ordering a backup set of nozzles for my WW Classic 19". I have a 2500psi, 5.5gpm with 150’ of hose. I’m currently running (2) 2503’s. Based on this chart, should I actually go to 25035’s? It would drop the psi a little, correct? I don’t want to slow down my walking speed.