I won't be able to help with this but I do have some questions about what the plan here is. I figure some additional info may help anyone considering doing this.
Is the tank already in its final location?
What's the structure of the flooring like? If it's anything other than a concrete slab, I would seriously consider evaluating if the floor is even strong enough and if it needs reinforcement. This thing will weigh over 4000 pounds when set up.
Presumably this will be a FOWLR tank? (Fish only with live rock). Do you have lighting? Do you have an RO unit? For a tank this size you really ought to have a saltwater mixing station.
What's the purpose of that hygger overflow contraption when the tank is already drilled? Will it even fit over the eurobrace?
Do you already have plumbing and a return pump on hand?
Why use an expensive canister filter when you already have a sump?
It looks like the skimmer with neck cleaner is too tall to fit in that stand. Will you use it without the neck cleaner?
This is a really huge leap into the hobby. Good luck!
