An account of my attempt at this challenge:   https://imgur.com/a/hOLImCX The goal for a mission like this is inevitably to create a ship with enough delta-V to get to Dres and back. That's a considerable amount, about 10,000 - 12,000 m/s. In science mode, I could build ships to unlock parts that would allow me to build a large ship. I knew that it doesn't take a huge ship to have a lot of delta-V. I would focus on fuel tanks and engines, and eventually go there in a simple pod.