Not sure promptly at 6 is necessary. Couple of flights departing then so line up at Biz checkin might have a few people in front of you (15 minutes) , the security line goes fast (10 minutes), immigration can line up or not (20 minutes), walking time (5 minutes), build in extra time (15 minutes), time to learn how to use the juice machine at Sumaq (1 minute), waiting time for WiFi to connect at Sumaq (3 hours). So 6am seems a bit early, 7am seems pretty comfortable.