5 would feel daunting until the ice is broken, or knowing that Una isn't in a serious mood for me... 7 though whef, yes please! That amazing pike personality, and the fun of Mariner would make it such a wonderful trip.
Wasn't Pike ready to shoot mariner and boimler out the airlock by the end of their little adventure? I think 5 is the only real choice, 12 hours is enough time i feel to move past both of their initial icy walls.