Wasn't thinking clearly, morning and all... I meant Osiris not Dark Ama. Yes I was worried about the speed too, but since I don't have Osiris nor Shingen, I couldn't test for him and could only go by theory and advised him to do a quick test to see if he can full burst on turn4, and whether or not cooldowns and stuff would allow him to full burst on turn8. He just has to see whether or not on turn 8 he has at least the following gauges: 55~70/90/80/70/60. 55(lance) or 70(bow but should be unlikely?) on Shingen so he can factor in whether or not it works IF he gets the soul weapon+MLB. This will allow him 2 fast full bursts, but ideally he wants to be able to reach 105/120 so he can use PF without sacrificing turns.
BRB gonna edit my previous post, hahaha.