wiring solenoids

i just got a prohopper kit and it came with six solenoids but right now i only want to run two batteries,so do i wire all the solenoids or two per battery or what do i need to do?

you dont need all the solenoids if your just running 24V. How many Pumps and how many dumps?

its a two pump four dump setup.i'm only going to run a 24v right now later switch to a 48v system