ok, my post was getting long so i posted it.
Grays can still talk before the take-off, during and after, no problems there.
I can quickly post us into space if everyone's okay, but I figured the take-off was an important event to get character reactions on, and since Reika's reaction come free with my own post I thought it would be mean to have my post also including us getting to Mars in like, a few days time-skip.
So, Grays can all agree on when to time-skip but in the meantime we can react to the big exciting take off hooray!