We could focus on their battleships, instead, which would most effectively help in future engagements, and most immediately help us trim the number of heavy ships. Long-run, starting with the escorts seems more efficient, but do we have a long run? By the time we have destroyed enough of their fleet that we'll soon be able to engage in direct battle, that's the point when they're certainly going to enter MAD phase.
Our best bet against battleship kamikaze seems to be to not even let those ships enter the void-space above Dis. And our best current option for ensuring that they
can't do this seems be to blatantly focus on the enemy battleships. But our best bet for ensuring that they
won't try to take Dis' void-space is probably to go with medium, subtle focus on escorts. I suggest the latter, because they might be smart and go straight for MAD phase if they realise we know their plans and they'll have to deal with heavy harassment for the duration of this war, with greatly reduced escort forces to deal with this.
The idea is to wear down their fleets, then make an attack focusing on their battleships and cruisers that'll ensure that they simply can't take Dis' void-space, at which point their MAD option will be reduce by half their options. Although this plan might have too many moving parts to be relied on.
As for the ground-side: It seems likely that a single disembarkation is enough to summon a first circle Angyl, but are they going to do that immediately? What advantages do regular troops represent compared to the Angyl?
@Durin
1. Can the Abominites summon a First Circle Angyl on a mass conveyor?
2. Would such a daemon survive an orbital drop?
2a. Would it be injured?
3. How many troops are the enemy roughly transporting per disembarkation?
4. How many disembarkations will it take to transport their entire ground forces with their current transport capabilities?