I understand your frustrations with all your characters. I paid for 2 extra slots so I would be able to continue to play while the other characters rested up. Now, I do not see the point of having 3 capped characters on a single account. It feels as if these past 3 months we having been playing a beta version with all the drastic changes. While this is good for those that did not contribute financially, but for those that did, I for one feels like I got the raw end of the deal. I'll save that rant for a different day.

Back to your title question, if you can afford it, I say use the 12k elixir. What else do you have to spend gold on? It's not like it costs +2.5m to buy the gold wardrobe anymore(saving rant). Elixirs really does rocks the house in both character performance and pink drops.