How to pass the game together? (Far Cry: New Dawn)

What do you think about cooperative? How to pass the game together?

The situation is this:
Other want to buy a game that would go together. But the free time practically is not the same (I have vyhi sat-sun, his mon-Tues), there is only the evening for a couple of hours after the 8, but it satisfied neither him not me. Anyway on my day off going to go.
With the 5th part was a mess, too, played separately - I went through one location, it another. When started together, was too lazy to have to go to a past location. In the end, held separately, ran together a couple of hours.

Judging by the description of New Dawn - there will still be a strong tie in the levels. If someone from the us to pump less, it just will not be able (I think) to go to another location to powerful enemies.

In General I would like a full-fledged cooperative. What are the tips passing a joint?
Or how I played?