I think what you’re getting at is that Han’s story is more of a classic romantic adventure, whereas Cassian’s story is deliberately less glamorous. Though when he becomes a spy and goes on spy adventures that will change.
It is more classic romanticism. As to all the things you pointed out about Han, none of that happened until Ben and Luke came into the picture. Prior to that, I don’t see anything in 1977 that suggests he lives anywhere near as dangerously as Cassian or with anywhere near the constant fear and desperation.