Which would make sense since he only gets in touch with his company once every few months. Although whether he talks to other people regularly is unknown, but I it's fairly unlikely.
I'm toying with the idea of just broadcasting a greeting on an open channel and see what happens. But for now conventional stuff.
Lennah keeps his own ship here so he must have someway of landing safely in the swamp... Are we able to make scans from our ships to find acceptable landing sites?
Having just played the Force card to get here, I'll rule at this point that the Force is telling you that you are in the right place but it's not going to nail it down for you.
As for getting lost or trapped in swamps- well yes indeed, though there you could make Force rolls. Jedi have edges in such situations.
Xeth- yes indeed, he'd need somewhere stable, but only a very small amount, unless he's living in a vast town-sized mansion. Looking for good ground is more likely to help you search after you land.
Vera is right; out in the open seems unlikely.
Well, at this point you have enough info to just start canvassing the more likely areas on the planet and seeing what you find. However, time is your enemy in this game. The better you can narrow it, the quicker your search is.