Speaking as someone who actually plays Red Mage, that opener makes me want to cry. First, the Embolden is extremely late. Second, Embolden should always be in the second weave slot to maximize the GCD gains for yourself and your party members. Third, the absolute earliest Acceleration can be used in the opener is at -16. Also, outside of fights like Eden Prime or Titania, a 10 spell opener is overall better thanks to the increased mana generation, which allows for more Reprise usage throughout the entire fight.