Well everyone has made some good points. Well they do not shoot C-130's any more their last shoot down was a Missionary rented plane. Catholic country with Baptist missionary's trying to convert them, who can blame them.
The Peruvian people as a whole are some of the most friendly ones in south America as far as I am concerned and I travel each year to all of them.
You have to see Cuzco, Machu Picchu, Iquitos, The Amazon and Chavin de Huantar. Peru has a million places and I think it is the most diverse Latin American country for its history.
If you are Single you will have a Ball, If not and you are alone the 250 mile rule is in effect and you will have a ball.
The food is outstanding. Seafood is great in Lima you only need to eat it in a good restaurant.
The Highlands are good but it will be really cold this time of the year. Just encase you did not know it, it is winter now down here. Lima is overcast and damp and cool. The jungle is going into it's dry season so it only rains 1 time a day.
Well let me know if you have specific questions and I am always open to help a fellow out.
Register with the Embassy. Very important, you can do it on the web. If your passport is stolen and you do not register you will have a hell of a time getting out of here.
Scan your passport and reduce it (Front, inside pages and your back page) seal it in plastic and while you travel and they ask for your passport just show them that. that will cut down on the chances of theft.
Hope you have a good trip.