Sound for my new theater?

We are nearing completion of our new home theater. Size is 26'x21'x11'. !30" Stewart screen with Pioneer projector. I currently have a small Linn system consisting of a Unidisk SC, 5105 and pair of 5140s. My thoughts regarding options are as follows:
1) Add three Linn 5120 speakers as surrounds and center and actively tri-amp the 5140s with a new Chakra 6100. Add a Rel sub.
2) Start over with a Magnepan based system using 3.6s as the mains with the Maggie center and surrounds. Also add sides for 7.1 and a Rel sub.
3) Start over with another dynamic speaker system.
My questions are:
A) Which approach would be the most musical and still capable of rocking for the movies.
B) Which pre pro and amps for #2 and #3? Need to support all the new codecs and 7.1
C) What complete system for #3?

Thanks for any and all feedback.