Fergi, what your experiencing today is what happens when people make informed decisions based on some good questions and obviously thorough research.
It really is awesome watching your threads come through showing us all that you clearly understand what it is your doing and what you want to achieve..
top notch fella!
That beer your making will be the best you've ever made - guaranteed.
The hardest part is behind you (process wise). Sure you still have to ferment it, but you have to do that regardless of "how you brew".
Bring her to the boil man, add the hops, chill it if you want/can, done and dusted!
Cheers,
Nath
BTW, it usually takes me 40/50mins to collect my runnings for a 26lt preboil volume. I tend to go slowly as i've been stung with a couple of stuck sparges when i first started AG'ing. Haven't had one since by taking my time.