You should put an Aura Forma here, so you can reutilise her afterwards with alternate builds since I've built this specifically for the Operation: Orphix Venom event, she was going to be subsumed by Helminth anyway so may as well get some use out of her, haha.

Make sure you leave [Hildryn] out of the bubble where the Orphix is so she will continue her energy orb production, if you leave her in the bubble the ability stops. Once you know where you are going in the rotation ABC, CBA (repeats) or CAB, BAC (repeats). Try to place her where you will be moving to next, just saves some time as you run past and fill up your energy and then place her again at the next location, easy ;). During the early stages since [Hildryn]'s duration is reasonably long she's still producing by the time you're onto the next location. I've opted for [Adaptation] just because I've been sent back to her after dying as an operator while she's being mauled by a crowd of enemies, with such low health this just seemed the better avenue, you could also use Vitaility or if you're not so worried then you can increase the duration even further with [Augur Message]. The large crowd mauling tends to happen after the 30th Orphix with higher level enemies (ie the Corpus energy weapons aren't all that friendly).

[Combat Discipline] is there for a reason, I've been using this with randoms, if you have a regular squad ensure everyone is using it, or if that's not possible at least one and the others Corrosive Projection with Co-action Drift.