I'm from COLOMBIA
And I'm sad to say don't go there,not even to the costal ports,the situation is just to tense,and the risk to high.
venezuela is not that much better this days ,but is no way to cross from venezuela with out ussing colombia and the amazon jungle is just to intense(unpaasable) to go that way.down the continent,Ecuador in the other hand is a really peacefull (in comparacion)and very warm place,peru is great,and if you can go to machu pichu, your life will be a little diferent that is a really mistical place, bolivia is the other contry that I know and is very piecefull but a little to boring.
I hope this helps,If you deside to go to colombia I have friend were that can give you a room and a meal and for sure some tools to use if you need them.
let me know if you need more info,