We're cycling S Am right now in Colombia. Here's a little of what I know about Peru.

Our top destination is going to be the Huayhuash range for some trekking. A Walk in the Huayhuash: 9 days in the Peruvian Andes - Spoke and Words

If you want to go to MP, don't buy tickets in advance, you should be able to get them much cheaper upon showing up in Cuzco.

Drivers are horrible

You will be chased by a lot of dogs. Generally whenever a dog has been excessively aggressive we stop and hop off the bike and they usually run away. Peru supposedly has the worst dogs, so we'll see.

I agree, ceviche is awesome.

The area around Chiclayo and Trujillo is notoriously dangerous, especially Trujillo, which is unfortunate because the oldest and most famous casa de ciclistas is in Trujillo.

If you go to Titicaca, remember that if you want to cross over to Bolivia, they charge $160 for American citizens.

Here's a map of S Am of random info I've found. Make sure to double check anything I have on there, especially casas de ciclistas because the info may not be current. https://drive.google.com/open?id=1n-...1c&usp=sharing