I think most people only run 2 nozzles with a 5.5 GPM, but if you think you might upgrade your pump in the future, you can buy the 4 nozzle bar and plug two of the holes. That’s what i did.
Running two nozzles, you need 25035 tips. That puts you right at 2500 PSI, minus 100 or so PSI for every 100 ft of hose.
Consider bar protectors to keep the bar from getting beat up with rocks. You can make them, or buy them when you get your SC and tips.