It's better to get all the supporting mods on first for troubleshooting and safety reasons. Good to hear you are on the same path as a handful of us here!
I wouldn't have it any other way! Do it right the first time then there's no regrets. I would like to do the S/C myself, but the down side is I could not get the extended warranty offered by pro charger. Would be cheaper to pay for the install then to replace the engine.