I have doubts about doing all three of them at the same time, since I had to abuse Drives, Limits, and Summons like crazy on my low level playthrough.

But if you still plan doing all three, here are some tips:
-Make sure you pick the Shield right before you fight Twilight Thorn with Roxas. This will allow you to get Once More at level 25, much earlier than by picking the other two. Second Chance is at level 49 though, which you might not be able to get.

-Abuse Magnet+Fire when facing large groups of enemies for a quick kill.

- Abuse Reflect to avoid almost any attack.

- Don't always use Cure as soon Sora's HP goes Critical. Conserve your MP.

- When you have Once More, don't overdo Aerial Recovery in the middle of an enemy's combo. If you use Aerial Recovery, it will stop Once More from protecting you from dying in a combo.