I want to step in here now and say that it would be a pity if this thread became a "bash" whatever member. While I think AW could have avoided certain comments (um, like the post I just say above this....AW please!?!/), let's not get others coming in and saying "AW always does such and such....." SO please stay on the topic, everyone!
Now the vet, insurance, electricity, costs, specs, discharge of huge amounts of saltwater (often it is not something you can just pump into the sewer line), access to water in general (of course there is a lot of wastewater from an RO unit) etc, etc, etc are all things that had better be sorted out in advance, IMO. You can't spend too much time on this, or get too many opinions, IMO. This is not the time actually to worry about the animals in the system. And the cost of buying those animals is totally insignificant compared to the cost of this tank. Long term planning about size of animals, feeding of the animals, medical treatement of the animals, does have to be considered. You may very well have to move a 7 or 8 foot shark into a QT system...and a few thousand gallons will not be sufficient. At least thing 10,000 -15,000 IMO for a QT system if you are planning on keeping anything sizable long term.
You will need professional aquarists to capture, transport and handle these animals - not just a certified volunteer scuba diver. An average scuba diver has no business capturing and handling such animals, though I imagine it would be a thrill before they drown. Depending on the shark, you may very well need shark suits in such a case. At my last facility, 2 people ended up in the ER in the last year for shark tank encounters. One was just an idiot. And there are idiots everywhere. Even professional one's....
And the cost of a mistake.... Often if you start filling a tank like this, that is it, there is no turning back or doing over. A few red flags - big red flags- have come up in this thread for me.
Personally, and frankly clearly, I don't trust professionals in this business. Because I've seen several poorly designed faciltiies designed by professionals - serious professionals. Professionals who didn't take into consideration some basic principals of physics, or who seemed to know nothing about the animals that would end up in the tanks in the future. But in those cases, the corporation could handle the expenses (or lawsuits)...with a staff whose job it was to care for, and as necessary, rebuild these systems.
Simple question: What are the impellers in your pumps made of? Because the "professionals" designing ours put in pumps with brass impellers. And what does brass do in a system? What is the impact on sharks? Leaving it to professionals could be a huge mistake. YOU really have to know what they are doing. I would seek advice and take questions to the people designing this facility...and sometimes...sometimes even the least experience among us can ask a really important overlooked question.
So I am concerned, but understand that you have no reason to explain these things on a website. It is a valuable resource, and I have concerns about some of the stock list as well...but even though that was the original point of the thread, the design and stock list can not really be seperated so easily in my mind.