I personally think the Iceni might be a bit big for a pocket sized fleet...
What about arming the Aeoluses with Maxims instead of their crappy beams, and in addition to the custom AWACS corvette, add another type of fleet- the line of battle group, which would consist of 2 Cv's, both armed with the largest weapon that would fit in the hull (even if it's a single, fixed and slightly detuned Mjolnir), and 2 Aeoluses, Maxim modded as the heavy hitters.
Two such elements (carrier+AWACS and heavy hitters) would make a task force, multiple task forces would operate assisted by Hecates (Command, control and strike craft assistance) and standard fleet members.
The new fleet system probably wouldn't kill 80 juggs in a single short battle, but if the groups would make hit&run strikes against shivan capships' turrets, engines and support units, they'd actually make the Sathanases glowing red blocks of junk.
Also- knowing the Shivan's inferior tactics dept, they'd have a hard time stopping the GTVA, since they don't have many ships designed to fight groups of small but tough (hard hitting, not heavily armored) and fast ships.