Yo, welcome. It appears that you'd like to have floor standers if they'd fit your budget. If so, my suggestion would be to get M60s and QSs plus the sub of your choice, and to temporarily put off a separate center speaker. The M60s(or M22s)can form a "phantom" center which is "clear", but the center image will shift to the left or right as far out as the main speaker on that side if the listener wouldn't be in the center.

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Enjoy the music, not the equipment.