I'd also say to swap out Darkra on OK for Full Break. And if going more magical, Armor for Mental.
1/1'd mine with no wall.
Ingus: Armor Breakdown/Banishing Strike/Pride of Red Wings
Luneth: Full Charge/4* darkness ability that gives doom/atk./Truthseeker
OK: MBD/FB/Mog's Teachings to BSB at start and OSB at end to finish
Arc: Curaja/Protectga/Mako Might with Renewing Rains at start
CoD: R3 Dark Zone/R2 new ability/Arcane Secrets
RW: Metamorphose on CoD
Nothing fancy about the strategy. The magic blink from Arc made initial set up cake, did 1 dark move on Luneth for every 2 FCs. Eventually just said fuck ABD and stuck to BS on Ingus. Killed him with about 18-20 ticks left on Luneth's doom timer, OSB doing around 50k. Saw one Meteor, which was eaten by blinks still on 2 people by that point. One more might've taxed things some, but I still would've pulled through, I'd say. Would've been able to reblink by then, though.