Question from a player that hasn't unlocked Monk yet: Could Tornado Kick actually be effective if used at the very end of Riddle of Fire's dutation with all GCD and oGCD buff/debuffs applied?

Example scenario:
  1. Monk has all GCD buff/debuffs active and GL3 before starting RoF
  2. RoF activated, normal GCD rotation continues and GCD buffs/debuffs are maintained
  3. With 15s remaining, Monk activates both Brotherhood and Internal Release and starts weaving oGCD damage
  4. Monk has Coeurl form ready before RoF ends (to rebuild GL stacks)
  5. Right before RoF ends (as well as Internal Release and Brotherhood), Monk uses Tornado Kick

Would this actually be an effective use of Tornado Kick outside of pre-downtime, or is fully-buffed Tornado Kick still not enough to make up for the loss of Greased Lightning stacks?