@requiem, sadly gas chambers are not particularly useful I've heard: Pretty much every dangerous or enemy you want to capture in a base defense has choking resist. Everything burns, though
Here's a jack sparrow setup I tried out. 5 OC radars for early game raid and missile immunity. excessive prison and vault space for hoes and recon expeditions (the smaller prisons will be built over, though). Main base has harvester for missions, pachyderm for space missions and landings. Side base has a car for Bandit warehouse/aircar race, and jetbike for easy early game ships and tailing ships, and a hangar on the way for a blowfish for sea missions. No dedicated garrison in either base, the extension base just has 2 pilots.
I don't think the radars defenses was worth it, since I needed 10 million before building the second base which meant only 2 hangars for more than half a year, and I had to ransom a bunch of my hoes. Plus I'll need to raise another 5million for a third base.
On the other hand, that run is still kickin'