Hi Ted,
Being semi-retired, I guess I understand what living a day at a time means... I've been in the soft/saltwater for over 40 years and I still maintain this old school Biological (Low Tech) approach. So considering your equipment (Hi-Tech) I am probably the worst candidate to give you any valid advice. However if you value the hobby for what it is : a source of enjoyment, then I can probably outline a thing or two that might be of interest. In my youth the Pros argued that specific tanks were the only intelligent way to aquariophilia, well Ted things haven't changed very much... Oh technology has really changed and evolved ! However nature is and always will remain the same. So the rules of Biology, Limnology, Ichtyology are pretty much stable too. In my opinion before even setting up technological marvels, one should ask this question : What is, a reef tank exactly? And what do I want to display in this tank and at what cost, effort and time? (in fact aquariophilia requires a hell of a lot more time than money). In my very humble opinion a specific tank can be breathtaking... Two side by side specific tanks can be a tremendously spectacular sight... Now imagine three!
Allow me a step back to have a look at a typical Reef Tank. What do I see Soft/Hard/Zoas elegantly spaced at generaly, let's say six inches. Is'nt that Sarcophyton wonderful besides that Bubble..... SIX INCHES???? Hey!!! What are you talking about : A Sarcophyton can and will reach 36 inches in diameter... How are you going to keep all this menagery stunted even in an 8 foot tank...Come on...
Now imagine this extraordinary 3 inch Sarcophyton all alone (with a few little extras, of course) in a 75 gallon tank. Is that so shameful, that you would be afraid of showing it to the neighbours? I guess not Ted, you're either into self narcisism or into getting the highest possible quality of biotope for your marine friends. Imagine the neigbours face a few years later when they see the only 3 foot giant, 500 miles around...
If you still wish a piece of advice for your actual set-up just let me know. I'll be more than happy to.