It looks like you've put a lot of thought and research into your decisions, and I commend you on that. I also thank you for not just rolling in here with the "lol i wanna bot help me rofl" standard faire.

I just have two comments, which are just that, so take them as you see fit:

1. I advise everybody's first boxing team to be either 5 of one char, or the 1 tank 4 heal/dps combo like 1 paly 4 shaman. The reason is simplicity. It's not that you can't figure out how to get them all to work. I like to think of it like your brain has only so many cycles to spend every second, and if a portion of those are "hey, i've gotta press this button every 5 seconds because my one druid over there needs to refresh lifebloom" or whatever, it leaves less time for observing, analyzing, and reacting to your environment. This is especially true in pvp. The simpler your team dynamics, the more time you have to spend reacting to the game instead of trying to manage the various rotations. This can be somewhat mitigated by clever macro and key overloads, but it's still very important. I've been boxing for quite a while, and I still tunnel-vision myself into mistakes.

2. 5x alchemy is certainly understandable in today's climate, but i wouldn't rely on that cash cow to continue. It might, but the prices might drop or who knows what changes might come by the time you're 80. It's a gamble, just wanted to bring it up. Also, I don't see the need for 2x enchanters. Not a lot that two can do that 1 can't, am I missing something?