Luke - Cantina Node Question

Luke is available in Guild Shipments, which is probably a better way to get him, than through cantina (there are a lot more viable characters in cantina, plus mods). That being said, the drop rates in cantina are the same node-to-node, based on most large-size data set collections. So if you want to farm him quickly, you go 1-B because you get more attempts. If speed of the farm isn't a huge deal, then 5-A yields ship currency and more cantina currency per energy as well.