Ah yes, the north... Before your bus to Chachapoyos, hang around Chiclayo a bit. Go the the archaeological dig of the Lord of Sipan, then the new modern museum of him in Layambeque, it is great. While there see the 25 pyramids. Then time at the nature reserve nearby. For a change of pace, beach it at Pimentel, eat at La Proa there, tiradito to die for. Lots to do in the north.... And warmer!