I can change it to a K if you'd like. 
But then he would need an airlock out of which to throw things...
As for who's the best driver, I can't imagine that naval voidsmen would have much need to learn how to drive - or at the very least, much practice/experience.
The other two... well, either would know how, but Steren has by far the better motor skills, perceptions and reaction times*.
Thank you, that's all I need.
She also seems to be leading the group here (Jael has a pretty submissive personality), so I suspect that regardless of their relative skill levels, she'd probably take the job.
Those were my initial thoughts as well.
* I've just realised I've omitted this from her character description, and I'm not sure why - given she's quite capable of reshaping her own flesh, she's made a few adjustments along the way. Taking some years off the clock, a few cosmetic corrections and generally tuning up her body. So she's somewhat stronger and quicker than you'd expect (although still within mortal limits) even without the active use of her powers.
This is how I imagine biomancers as well -- even if you put them in a null field, they've still probably reconfigured their bodies to be somewhere between pro athletes and black-belt martial artists, and powers or not, facing that is still a pretty terrifying prospect.
I took that to its logical extreme once (as a concept only, not as an actual character), and ended up with the page image for
this trope. And then somehow I ended up with a python.
EDIT: Postage. Nothing that'll set the world alight, but it's something to get the ball rolling again.
Left the door open for you to find the crashed flyer, Marco -- you already know what you'll find.