it will be more than enough yes. also remember if you did not play the case tilt game yet : if you have pockets of air still in the rads, it may still restrict flow (and the leakshield will pick them up as abnormal pressure variations when the pump speed changes). the leakshield has a deaeration function too i believe to help with that.
If your loop is fully de-aerated, then you're at your maximum flow.
When you'll do your little thermal tests, you may realize that you don't need to run the pump at full speed, so it will be even more silent.
Yes, it has a nice deaeration mode and I do the tilting in every direction to get air pockets out. I'm not too concerned about the pockets until I fill the loop for production, currently I'm just doing flush after flush trying to get all the damn dirt out.