These are my thoughts;
It doesn't really sound plausible that a group of six scientists, who aim to explore, embark on a vessel that supposedly does "everything by itself". There is no ship, and never will be, that does everything by itself.
Navigation for instance; Here on Earth there is the use of autopilots on modern ships. The parameters put in to the computers running those programs are based on rigorous charting, and still there is the necessity of watchmen on the bridge for safety reasons. I can not even begin to imagine how a ship that does everything by itself could navigate uncharted waters. And if GPS or something equal was at hand, no expedition would be necessary. The world would be known.
I guess that scientists might be good cooks and cleaners, but I can not imagine them making cooking and cleaning schedules. They are onboard to explore, collect data and chart. I guess that with such modern equipment as you have on board they would be pretty preoccupied with exploration. And as this is a whole new world, they would have plenty to do with that, and be quite enthusiastic about it too.
I also think that with all this sensitive equipment; solar sails, energy propellers extracting energy from both water and wind, and whatnot, these six scientists would be in a serious jam if something technical went wrong unless they have at least one scientist along who understands and is able to repair the equipment. His (or hers) scientific research time would be minimized though, due to constant maintenance of said equipment.
With the above alone I would find the whole ship setting more plausable if you added a crew of at least six people; Three watchmen (one of which should have Captain status), an engineer, and a cook/steward. To have a minimum crew onboard would enable you to put the scientists in focus. The crew could simply 'be' there, in the background. Nobody ever reflects about service personnel anyway.