In the long run, it will depend on your vacation itinerary as you could check out the jungle just before or just after your tours in Cusco. From Lima to Iquitos you will have more flights obtainable and possibly also more affordable ones than from Cusco to Iquitos. I enjoyed https://manuperuamazontours71593.alltdesign.com/peru-amazon-river-tours-fundamentals-explained-46656827