For speakers, I would get 5 identical monitor speakers + 2 identical subs (same exact brand and finish as the 5 monitors for AESTHETIC reason).
Place 2 of the monitors atop the 2 subs using 18" SPEAKER STANDS (same color as the speakers, like black, so black monitor, black sub, black speaker stand). This will turn the 2 monitors + 2 subs into bigger "Modular Towers".