I did something similar, a spaceship crashed on a Planet and the surviving gathered with the time. The captain had the military job, you can work from home like the gardener. The robotic engineer could also work from home, but some task are impossible to do, when the sims stuck on the lot. I kept cook/cleaner and gardener separated, because gardening will take some time. I think, I had a scientist too, but I didn't played it actively, she was officially on a field and research mission during that time, like the astronaut. I kept robotic and craftsman seperated, because there is always something to repair and upgrade. The bartender was also an entertainer/musician (no job). One crewmember (and inofficial soldier) was in the bodybuilder career, to train and teach the other sims, that they will survive the rough planet (Strangerville). Logic skill I have trained with the telescope, and that why I needed the scientist for the satellite dish, to prevent the abduction. The computer usage: there are many options, which kept a sim busy, programming is good for the flight lieutenant. The intelofficer could chat with other or search through the web.
