If you're going to insist on running 52 speed you shouldn't take the EVs out of SpA because 216 SpA gets you an extra EV point. Drop the HP down instead. I agree with SJ in that you should be aiming to outrun Adamant Aggron only, though.
Also, I can see the merit of slightly faster EV spreads - mention them in AC and what they outrun, while also mentioning that it will severely compromise Nidoqueen's bulk.
Everything was beautiful. Nothing hurt.
I'm back, baby. Look for me in 5th gen UU!