Kash my man!!!!! It's a pity I cannot make it to Maun for a couple of beers with you!
darkroom: there are some combis between Maun and Whoek, quite cheap (50 US for a ride). But ask for them in Maun.
There are 2 companies keen on German in Namibia (Bush Bird and Wings Over, thou WO also hires non German speakers), the others are okay with English. Also it seems that Desert Air in Whoek prefers afrikaans speaking people.
good luck