Hi Ryan.
Thank for your update in Cartagena or Barranquilla as a mandatory point for the record, I see that you have a chartered a plane to take you from Cartagena to Panama this will save you time.
I know for sure that you will make a very good time in Chile and Perú.
Be aware in Lima that there is the old Pan Americana and the new Pan Americana, follow the new route and you will pass without heavy traffic.
Special offer for you, I have the route from Lima to Piura, Lima I do not have to avoidance route but it has the ‘circunvalar’ avoidance route West of Trujillo, Perú.
I do not know your route in Ecuador but do not take the route the Garmin shows as Pan Americana, this road is in bad shape, there is beautiful road that starts East of Guayaquil flows north and then turns East to end in up in the mountains south of Quito, also I have the route to avoid Quito on the east side, once you get back to the main road north of Quito you will pass the Equator line 3 times, If you thin that this information is helpfully for your group I be  more then happy to share.
Ryan it is very important for your group to know ahead of time that your average speed is going kaput in Ecuador and Colombia due to Mountains, I remember Dick Fish telling me his frustrations south of Colombia, hey Tiby we been riding back and forward, up and down and I do not see my GPS moving south. If you have any questions on the road from Perú to Colombia please let me know.
I am working in plan B, C, D, E for you in Colombia, The Pirelli importer has offered wholesale price for tires if you need them in Medellín, and there is a Suzuki service shop ready 100% for you at any time for your maintenance. I will keep you informed
Do you happen to know aprox date for you at the Colombia Ecuador border??, from where I leave there is a whole day ride from here to there and if is raining it will take me day and half, for your information this month of May is rainy season, it does rain but not as bad as Vancouver B.C or Seattle.
Best regards and very good luck.

Count with us Colombians, our house may be small but we have a big heart,  <!-- s:D --><img src="{SMILIES_PATH}/icon_biggrin.gif" alt="Very Happy" title="Very Happy" /><!-- s:D -->  you will understand this when you visit

Tiberio or short Tiby