I ran 49% alcohol, 51% water using a shurflo 100psi pump. If you run anything higher than 50% alcohol you're risking pre-detonation under compression.
www.Mcmaster.com part # 32885K731 (general use spray nozzle, 1GPH @100psi x5)
If I did it all over again from scratch I'd run a single large nozzle upstream from the manifold. The 5 port monster wasn't the best design, especially since it was built into a short runner manifold.
You add a valve and pressure switch to keep it controllable.
Pump->pressure switch->valve feeding the sprayers. This way you can have your lines pressurized and then flip a switch to start dispensing. If you just have the pump plumbed directly to the nozzles air will get in the lines and they don't start as evenly.