In the meantime did try Odysseys and it can't be done with 5 IMO (also thought that about Invictus though).
S energies are dead weight and it really needs squall to have enough shield damage and some flux left, but squalls run out in a marathon like this.
Can't trade with the 700 range hardflux options, can't take shields down with HIL. 700 range PDAI irpulse spam+double HIL+pilum catapult and 1 autopulse on both sides, builtin mags, 1 HIL and LR PD spam came closest.
It really needs a "standard" battle where it can use squall+reapers+double HIL to shine.
Can't speak to longevity against six ordos (though they lasted through CapnHector's five) but PCLs are great on a duel-Autopulse Ody because they do high + consistent HE DPS and can fire from about the same range as Autopulse, and maybe Locusts could keep it up all fight (Or at least help with frigate/destroyer phase, where fast Ody is most vulnerable)? I know at least Sarrissa(s) see some use on the Ody, even with ITU; frigates that get on its non-broadside are almost free to run amok, the Sarrissa(s) help there, and often the Ody boosts well within range with its ship system.
Since I grab Expanded Magazines, I usually slap an Antimatter Blaster on the very nose just as a little middle finger to my opponents, but I don't think that the ammo would last, and I'm not sure if getting that close would really help with an endurance test. Now, if there were some tactic that kept the Ody pack moving, rather than lining up with long-range weaponry like Executor or Legions, I bet that could really chew through a lot. Perhaps some sort of tactic where the pack circles the battlefield capturing points and picking off stragglers? Or even just an avoid order on their massive death ball. Two Ody at the top to pick off reinforcements?
But, it would probably take longer and be more order-intensive; would the Ody even have the PPT? Could it backpedal fast enough to avoid getting jumped by, say, a Nova and a Brilliant straying from objective? Can AI handle shields well enough to survive that kind of pressure? What if the two Ody at the top get pinched against the top wall by the death ball, or reinforcements come in while they are still at full flux? Seems iffy. And I don't think there is any mono-fleet non-Omega Ody build that could handle even five ordos in a line battle. The ship is made to move, darnit!