I building a new washer system for my car as I'm fed up of my poxy 2L ford one running out every five minutes especially when I'm trying to clear mud off the windscreen

My new system uses a plastic 10L jerrycan and a metal cage to mount it to my roll cage.

I intend to use it to feed 4 double jets simultaneously (2 on bonnet, one on each wiper) as the std jets are not enough to clear mud quickly without loosing all visibility due to smearing so i have to slow down or stop for 20 seconds or so.

I've mounted 2 std washer pumps to the jerry can to feed in parrellel as i would like a bit more pressure to get it from the boot to the windscreen.

My question is this:

will this provide enough pressure or will I need an additional in line pump near the bulkhead in the engine bay to boost it a bit?????