For the first two waves in each flick set, a crossover is safer than a transfer due to the tap in the right hand. This gives you more time to transition over.
Otherwise, for the remaining flick waves, use whichever method you prefer.
Oh and you want to hold the middle hold with right hand. That might rob a few Full Combos if you forget to make a mental note.
This site costs $120 per year to host. If you would like to help, please donate with the above buttons.