First normal take off is Flaps 20.. immediately after gear up then you go to flap 10 on the 2's and 3's.. On the 4's and 450/550 its flaps 20 take off after gear up it immediately flaps up.
You will fly so fast through V2+10 that is recommended to just maintain what you have for the climb but not to decrease below V2+10, directional control is the most important... Its just like all the other jets out there, just it has more balls single engine than most!!!
Asymmetrical thrust is not more than the rudder can handle.
My two cents