MiccaM-CS Dual 5.25 Inch 2-Way in-Wall Center Channel Speaker for Home Theater, Whole House Audio, MTM LCR Design, 5.25" Poly Woofers, 1" Pivoting Silk Tweeter, White, Paintable, Each

Do you need a speaker box in the ceiling to mount these or do you just cut a hole in the drywall and install them?

Has anyone used them in a home theater, preferably in an Dolby Atmos setup?

\Which makes a better frontspeaker set up. 3 or these or 1 MTM with a 6.5 or 8 for left and right? How about these for rear speakers too. I like the idea of 5 identical speakers, but not if this isn't a suitable main (with a sub of course).

Micca doesn't make towers with 8 inch drivers. I was thinking of buying these and building wooden towers using mdf or something. Bad idea ?