First off, in DBZ when gohan goes crazy on Frieza, he preforms Masneko if i'm correct, And he shoots out a crazy big one in seconds if that, I think Masenko should be abit faster charging (not alot)
And for ascending, Once you reach perfect Ascend PL you can transform while doing pretty much anything, (IE, Power struggling, swooping) Like Vegeta when the cell saga, He jumped up, Swooped, Turned SSJ, and when nuts on cell, Why not have it like that, or in the buu saga when Goku was Throwing the Genki Dema?(Sp) he was healed by the dragon balls while he was throwing the Spirit bomb he burst out in to SSJ (although the Genki was already charged, but you get the idea.
And for ascending, Once you reach perfect Ascend PL you can transform while doing pretty much anything, (IE, Power struggling, swooping) Like Vegeta when the cell saga, He jumped up, Swooped, Turned SSJ, and when nuts on cell, Why not have it like that, or in the buu saga when Goku was Throwing the Genki Dema?(Sp) he was healed by the dragon balls while he was throwing the Spirit bomb he burst out in to SSJ (although the Genki was already charged, but you get the idea.