M.S.
Maybe think about a nickname? Many times you are others will shorten names, even if you don't intend it to be. Maz? Would that be too close to Maxx at home? Only a concern if you intend to shorten it.
I think it's totally what you like. I think it's unique. You have 2 more traditional names along with Maddox. It would be a second non-traditional name.
My sister was leary about naming her little girl Hattie, because it sounds so much like an "older lady's" name. Now, I cannot imagine her daughter as anything but- and I think it's absolutely perfect. Also, Hattie seems to be making a comeback!
I always either pretended in my head, or actually called out my perspective kids names, to see if I liked screaming it, since I would be doing that eventually! LOL!
Good luck and congratulations!