The cylinders are NOT ported correct? If true, why not just ride the bike as is and discuss with whoever will port the juggs which pipe is better for your goal once ported. Then get those pipes. You may or may not like the pipes until you are ported but you'll have them ready. It also gives you time to maybe pick up a set used for a better deal although I prefer new.
I discussed sniper, shearer and Cpi with my builder. Turns out shearer was best for what I do.