there's basically no management for the abyssal blades at all since there's no way you'd be able to use 300 stacks unless you were in specter form 100% of the time which isnt possible. and for mobbing it's not very practical either since it only procs if you cant 1 shot in specter~
in specter form you can float in the air by using down arrow key + jump or if you lock the command down arrow key + flash jump key. you can chain it with double flash jump or up jump into flash jump in specter mode as well. yep level 1 origin and mastery skill (4th job)~
3 were my previous burning chars, my old main, current main, and ds so 6 chars! -my nl should hit 260 from 258 by next week through dailies -khali should take around 3 weeks to hit 260 from 255 from dailies -then after that maybe lara/zero/then bt when its 6th job is announced in 2024~ you can bet ill post 6th job for all of them eventually (^∇^)
boost nodes - boost 8 skills using 6 slots~ 1) overcharge drive, ominous nightmare/dream, impending death 2) gust charge/insatiable, scarlet charge/grievous, abyssal charge/unbridled 3) creeping terror, unstoppable infinity spell is probably the most important 5th job skill to level, bossing rotation looks like full burst in specter -> stay in specter for about a minute, off burst in flora form until burst is back up again. the standard for mobbing is proc'ing devious nightmare/dream for huge aoe, then using skills to lower its cd, then swap forms and repeat. for everything else including burst order id probably look at the ark discord!
i would recommend joining the ark discord and read the faq! in terms of mobbing though using devious nightmare/dream and cycling between flora/spectre mode is important~