Looks good. what type of coral are you wanting to keep?
I would like to see a little more vertical height in the rockwork.
+1 on more vertical height. Some of that shelf rock you have can be used to create cool overhangs and caves.
Looks like an aio tank. Depends on livestock, i would say you will need more rocks to take the bioload if you like to have more fish.
your revised version is very neat ! make sure you have enough room in the back for water flow so it does not trap detritus. Not sure what happened on the back wall but If it was all black you would have a much nicer tank..
Happy Reefing :beachbum: