Okay, I recommend Timid (Speed+ Attack-) or Modest (Sp. Attack+ Attack-)
Timid- You raise your okay speed and sacrifice attack since you are using sp. attack. Speed Boost boosts your speed even further, so you outspeed a lot later in the battle.
Modest- You raise your amazing sp. attack and get rid of the attack you are not using. You also sacrifice more speed, which can be fixed, for more power.
You can choose from here now.
Although Attacking is better, I think you can make use of Special Attacking.