OP,

I'd like to mention a few things that you're probably aware of, but they bear mentioning given the original post.

First, there is no challenge for Exec Plat, just for Gold or Plat. Based on your post, it seems like you're doing the 10K EQP for Platinum status.

Second, since these challenges are based on points and not miles, most of the AA promotions (e.g., double EQM / triple RDM from STL, RDU, PIT, and BNA) will not give you additional EQP for challenge completion. Having said that, you can obviously take advantage of these promotions to build up your EQM / RDM balances while completing the challenge.

Hope that helps.