UPDATE 4-6-16
Ok, the stand is built. It's a beast.
Took me several hours to build. A lot of that was head scratching in the beginning because the instructions were a vague guide at best. There seems to have been some minor changes in the design.
When I was looking at the illustrations in the instructions, they didn't seem to be matching up with the pieces I had. And nothing was labeled. So just trying to even figure out what was the back panel and what was the top panel took me a while.
And another piece seems to be completely absent in the new design.
But that said, it turned out well and like I said above, it's a beast. It's marine great MDF inside which weighs a ton. It goes together much like Ikea furniture with the same kind of hardware, but it ends up very sturdy and the panels are quite thick.
What's interesting though is how little of the tank is supported. Basically the sides, along the back about 3/4 of the way back, and the very front corners.
Now that it's built and I have a better sense of the actual and visual space that it takes up, I'm second guessing the placement, and thinking my second choice might be the better of the two.
The one thing I didn't like about where I was originally placing it was that it would really only be viewable form two sides. It's such a nice tank that is seems a shame to tuck it in the corner like that and lose that much viewing area.
So now I'm thinking of pulling it out and putting it against the adjacent wall, directly across from the kitchen island. Even with the 31" depth of the tank, there is still a ton of room between it and the island so that's a non-issue.
The bathroom sink is directly behind it if I ever wanted to utilize the drain. And now we would have unobstructed views of all three sides.
The downside is that it's more out in front of the TV which may produce more glare. I guess I could always dim the lights if I needed to watch a movie or something when it mattered.
And the overall scale of the tank is large for the space which is more pronounced in this location. Again... it's a beast. lol

I'm so used to my tank being more built in and in a room that's more off to the side rather than front and center.
Here's some pics.
What do you think?