3 center channels?

I know it is not ideal for 2 channel stereo music reproduction, but honestly, I usually listen to music in one of the various dsp modes on my Denon X4300 (5.1 set up). Reason I ask is we are trying to reset the living room for the grandkids and speakers that can tip over are not really in the cards. We will have an entertainment unit that is 70" wide and 30" high that is 9-10ft from the couch. Bottom of the OLED is 40", so 10" is what I am working with anyways. The thought of 3 identical speakers is appealing to me, especially if they are wide and low (kid resistant, cuz nothing is kid proof). Most of the time is spent watching TV, Movies, etc and music is secondary. How bad would it really be?