Thank you for your questions.
Could go the custom route, however for a 60-80G cube my display space is very flexible. Would come down to cost and benefits.
I want to keep relatively basic animals in the mixed reef. Currently, have an anemone that is host to a clownfish pair, a barnacle blenny, a snapping shrimp and goby pair, a red cleaner shrimp, tons of mushrooms and zoa, most recent additions of a plate coral and hammer have grown well for just a little over a year. However, I couldn’t keep Montipora.
I do not have a sump and never had one. I have a lot of live rock and a canister filter and a hob protein skimmer. This set up has been restricted because I live in a coop - where space is a limited. I *think* I should have a sump on the new set up and this is where I start to get lost.
I plan to have a small enclosed space behind the tank for the outlets and an R/O system. I will have a lot of space under the display tank.
As this is my retirement home, looking to spend a little on ease of maintenance. I love putting my hands in the tank but my back prefers I not lug water buckets.