Dale, looking lekker man !!
Just a wild suggestion...... that black container you have for extra volume is a good idea, but you could use it more to your advantage ......... if you put it on the counter to the right, you could have the tank overflow into the skimmer then that would flow into the DSB the return pump would push water into the black container which would drain into the DT..... in the black container you COULD put in an extra DSB, some macro Algae, a ATS etc etc..... all the pods etc that grow would then drop into the DT for extra food for you corals and fish ........ just a thought !!