I want my Staraptor in Diamond to know:
But I can't decide if the fourth move should be Take Down or Aerial Ace.
I would say neither and go for Return because you already have a flying type attack and Take Down causes recoil. But if your deciding on those two go for Take Down
I say choose Take Down , Take Down finishes your opponent faster.
And You'll take some recoil
In truth, I would go with aerial ace if you HAD to choose between them. Take down can be reckless and has caused me to loose battles. Both of them give STAB but aerial ace has no - miss accuracy.