5/7 takes 105,000 trophies to clear the whole page.
With an avarage of 5,000 trophies/trip (though I actually seem to avarage about 4,850), that's 21 trips to the 80 stamina map.
Not counting stamina from gathering, that means 480 stam/day = 6 trips/day. And 21 trips / 6 trips/day means 3.5 days of farming to clear page 5/7.