Being a UEF fanboy, i'd hop in the UEF chair too.
Like the idea of sending the defected ships through as a ploy; good one, might work, but would the GTVA fall for it? They would likely insist the vessels were taken over and the crews placed into custody so they'd be unable to do it. A suicide ship again might work, but FS has demonstrated an ability to detect warheads, so they'd need a lot of cover and luck.
The Feds are on the backfoot definately; if they try to fight the GTVA head on they will loose. The Tevs weakness however is their reliance on subspace; even Steele warps in and out quick. I would try to develop some kind of subspace jammer and get that deployed; would prevent the GTVA from subspace strikes, and the gate network could perhaps be modified to work through the jamming, so then its just a matter of keeping gates locked down. Alternatively some kind of code or frequency could be introduced that allowed UEF ships to still operate. Any non-subspace advance into a jammed area would be detected quick and risk trapping themselves and then getting grinded down, unless you brought tons of supplies and kept a supply line going with convoys. A single strike would take weeks, maybe months.
If a mobile version of the above could me made, then you could wait for a GTVA destroyer, jump in a jammer quick with 2 or 3 Naras and trigger the jammer. I doubt any destroyer could survive a strike like that for more than 20 secs. The only downside would be having to protect the jammer (which would probably have to be a Oculus) and that if any Tevs warped in at the edge of the jamming and came in on engines, you'd be trapped too unless you dropped the field to run.