I can't give you answer, just wondering why someone who dares to fly motorgliders and possibly some fun taildraggers or microlights or all of it, went for integrated course. The obvious answer is saving time/going for airlines as career change etc. Each to their own, so long you don't pay A320 or 737 type rating before looking for job. Didn't mean to drag SSTR here, but word of caution.
Unless you do commercial ops/instructing on SEP aircraft, I don't see need for SEP on your commercial. The revalidation requirements for NPPL aren't as onerous as 'straight SEP PPL/CPL', so why fiddle with it if you won't use it?