Yes, the tuner's pack is a good idea. While your at it, pick up a hardened firing pin retaining pin and whatever spare parts catch your fancy. Perhaps if as nice as you report, you wouldn't need their "3 spring kit", which is an improved hammer spring, firing pin return spring and firing pin block lift spring. This lightens up the trigger pull in DA and removes much of feel of the FPB lift. Perhaps the previous owner already lightened these up, however so who knows...