First of all, tangs don't school, they shoal. Next of all it is highly unlikely that you would be successful in any tank as small as 1000 gallons. Think 10,000 and you might be in the right ball park. A group of 5 tangs will not even shoal, they will aggregate and the odds of them disliking each other is exceptionally high. Tangs by nature don't like each other much as they inhabit the same ecological niche. In very large tanks, (1000 gallons is NOT large), they tolerate each other but only barely.
I would have to agree with jiggy and the others who are trying to tell you this is not a good idea. And it is not just reinforcing the floor, you should probably do that for 400 gallons on up (I did it for my tanks and they are not that large). You most likely will need a different house. Think 15 foot tank, think fish room, think about doing 100 gallon water changes. Too often we in the hobby decide something is desirable when it is clearly not in the best interests of the animals we try and keep. Sure it would be pretty. If you want to see that, take up diving.