I have a few questions, sorry if they've been asked before: if in a dungeon you come to a boss with 40+ in both manas, is it better to Manafication before the fight, and open with the melee combo? Or just build normally and use Manafication on the second go around?

Secondly, unless I get no procs during my opener, it's hard to fit in Corps-a-corps/Displacement before the first Manafication. Is using them more important than Fleche/Contre Sixte, or should I just do my best and ignore them if they can't fit?

Thirdly, if you get lucky with procs while you have Impact up, is it better to just ignore it and let it fall off, or use it and use the Dualcast on Stone/Fire? Is it worth using a Dualcast on Impact if its about to disappear?