A full flank roation isn't optimal but offers good effortless damages, it's enough if you just want to do your job in a party, but if you want to min/max, you have to think with the full panel of skills, especially Bootshine and Impulse Drive.
You don't need Skill Speed at all in this rotation, you don't need to think about keeping your buff, and you can refresh ToD and Fracture whenever you want.
Also, Dertermination is always our best stat behind strenght, then comes Crit and Skill Speed depending of if you need to reach a GCD cap, your TP management, and your current stats (the more you have crit, the less it's effective).