Rosi is definitely interested in both of these places so either one you want him along on works for me! I'll keep him to just one so others get a shot. He'll also probably see if Will wants to come along to either location also since he's a smart science boy who knows smart science things.

Edit: I also know Stone has offered to help explore multiple times and Rosi would certainly mention his name for the weather station trip since he can not only fly but be big enough to also carry people.