Really you need to hire someone who know's what they're doing if you want it to end up sounding right in that room! It simply takes too many years, and thousands of hours of experience, to get truely world class sonics from a set-up. Most people end up with mediocrity, no matter what gear they use in their rooms, because they don't know what they're doing unfortunatley! There's simply way way too much going on sonially in a given room, that you really need to enlist the help of someone who know's what they're doing...my suggestion anyway.
By the way, where are you located?
Good luck