Interesting idea, but I have a feeling the Barge is going to end up dead very fast (hooray for people who like to drop caps on helpless transports, and this is even worse as the barge is sloooowww)
Hope it manages to get at least near Canaria.
Edit: just realized, with respawn disabled, the barge can also respawn I guess ? Then it's just a matter of stopping it before it docks somewhere near GC to impede its efforts of getting to the planet?