Originally Posted by miikkak

Would be very useful to know what you are interested in&how much you intend to spend in your flights... From logistical point of view, don't plan to visit more than 2-3 countries during the trip. If visiting Ecuador, Northern Peru is easy to visit and much less touristic than Cusco which of course is worth visiting. There are beautiful & historically important ruins in Trujillo (huaca de luna&sol, huaca del brujo), Chachapoyas (Kuelap) & Chiclayo. Might be a good idea to have a look at guidebooks like Lonely Planet to have general what you can do in different countries...