A newer Version of P&N-ism.
1066431410.zip
This modifies the physics of the first campaign to something I like a lot more
Be sure to read the descriptions on everything you buy.
Be especially careful with the lifesupport requirements of ships, and keep an adequate number of crew quarters aboard
Also note that power is a more valuable resource. You may have to use Plasma Capacitors to store extra power instead of just adding more generators.