I am not sure what the gun laws are like in Peru, but I would recommend a Ruger Mini 30 instead of a Mini 14. It fires a 7.62x39 bullet, which would be better for deer than the .223 of the Mini 14.

There are dozens of good rifles in better calibers for deer hunting. Have you considered a bolt action rifle? I would recommend .243, .270, or .308 over a .223 or 7.62x39. If you insist on having a semi-auto, Saiga makes a good .308 semi-auto which I have heard is very accurate, and here in America sells for about the same price as a Mini 14.

With all that being said, you can get the job done with .223 if you know what you are doing. There is just a lot less room for error.