I speak spanish (lived in Central America for the last 14 years), also my wife will be with me and she is latina so I'm not the typical gringo tourist. Airfare from here to there is crazy. It's looking like $800 bucks a ticket. I can fly there from Miami for less than half that and Its only a 600 mile trip from where I am now :-( I'm thinking of taking a bus to panama city and then a boat to Cartagena stay there a couple days, bus up to Santa Marta for a couple more days then fly down to Medellin. The price for this is pretty reasonable, just a tradeoff in alot of time spent travelling.
say hi to pablo......
I think your going to have a great time and speaking Spanish is a BIG +. I would just try to score some really good "regular" for seed and a few grams of crippy for smoking. The reg is good for great classic Colombian landrace Sativa that will grow great at your location.
Peace from Colombia!