Originally Posted by
Zamii
at that duration, short of using subpar rotations, yes you will be running out of TP, unless you get a paeon from bard, or the equivalent from machinist.
i know you said you are already spending chakra on meditation, but just to cover all bases, i'll say it anyway.
you can (and should) at the transition into tornado phase, gather 5 stacks of chakra, use purification, then gather another 5 stacks to use in last phase, if this is done well enough you wont miss a gcd, of course you wont be able to begin fighting the adds with courel form, but as it is a timed phase it hardly matters.