We do help each other out - I guess it's sensible for you to diversify, but those of us that are well and truly battered by the pv industry struggle to understand why anyone would want to get into the business at the minute. It seems to me that it would be very easy to have pv drag the whole of your business down if you aren't careful, but if you are careful, build slowly (well you won't have an option about that cos there's no work at the minute - 4000 installers and approx 4000 installations in the last month, 1 a month whoopy doo, or if you remove the RAR 1200 paid for installations in a month for 4000 installers 1/3 of a job each for the month and someone stole my 1/3!) then over the next few years it will be a useful string to your bow.
MCS inspection 90% spent on paperwork, 10% on site if you're lucky. Hours and hours of ---- inspection of the most trivial paperwork you can imagine. Make sure every t's is crossed and I is dotted and personally I'd create my own QMS rather than try to adapt someone else's, it's more meaningful in the end and easier to adapt as you go along. Good luck.