Let me shorten it for you:

Roll face on keyboard
Have god-tier mobility
buff 5 other players in the party with Embolden
proceed to get 98th percentile.


Salty satire aside, what you want to do is acceleration at -10 seconds then begin hardcasting verthunder at -4.5 seconds (have your tank use a countdown). This lets you land verthunder and veraero on "Start" for max mana building off the bat and proc chance. Everything else should be straightforward from there.