LOL - Thanks Dustin.
I am going to have to say once again - anything I buy at the LFS is mine. Whether I put in in a 10g tank or take it home wrap it in seaweed and serve it to the neighbors, it's mine. "..throwing money down the drain." - Yeah, I do that a lot. I am horrible with buying things I later decide I don't want. Does that make me a bad person? Didn't Polonius say, "To thine own self be true"? Well, let us not forget this is a hobby to which we should find joy.
Not a 90g or 900g tank is going to provide wild fish anything close to their natural habitat. If I was in this hobby with that mindset, I would NEVER buy another fish.
As far as this system is operating, there are currently 3 tangs in the tank. The Blue Hippo, Purple, and Desjardins. All are fine, happy, and even school together. If the fish grow beyond this tank, well then that's a great reason to buy another tank.
Thanks for the good wishes and to those that lurk these forums looking for opportunities to play the enviro-friendly card, like a previous post (stevedola) mentioned, "Don't waste our time."