Welcome to reef to reef. Yes that looks great. Some tanks have a 360 degree views so I couldn't speak for for how the back looks but if it is picture view only 1 side it looks awesome.
Kinda depends on what you like.......will it function, yes. I personally would try to not make it look so symmetrical with everything being centered. I would also remove the perfectly round hole on the top and maybe stack those a bit differently. Again, this is just my opinion....if you (and your fish) like it, that is all that matters