[X] "The weather from the East will bring heavy rain tomorrow, so beware of flooding in the afternoon!"
This planet is quite well-populated by a few different nations, who exist in a steady-state of peace with one another, with none of the tensions rising to the level of war. There are some satellites in orbit, but that's about it, you don't spot any manned stations. All of the nations are effectively democratic and society is fairly egalitarian. There's a city visible just upstream of you that'll probably notice if you get up to anything dramatic. You pick up mention of the 'mystic monasteries," where those who bear the curse of the Emperor are expected to sequester themselves and pray to a faith that halfheartedly praises an "God-Emperor" nobody seems to much respect anymore.
Summary: Fairly close to you, quite populous, satellite tech, egalitarian, world order, monastic traditions.
Democatic & fairly egalitarian sounds like a good basis for the human part of crew.
And a monastery where we can find psykers praying to a fatih that "halfheaterdly praises a 'God-Emperor' nobody seems to much respect anymore". "Halfheartedly","nobody seems to much respect anymore", sounds like we could get democracti&fairly egalitarian psykers.