What is the cost of the reference center channel as a kit with 7" and 5" Revs? Also, could this design be made into a 3-way tower with a WMT set up? Would the same crossover from the center channel be useable for this design, or would a new crossover have to be done for using this as the L&R channels? And last question (more of an opinion), would you gain enough in going with the 3 way design for L&R to justify the extra cost or does the SSR do it all so that a 3 way isn't really needed? Thanks for your time.