Here I’m undocking the ISRU lander. I wanted to design a ship that wasn’t lugging around unused lander engines by having them used as part of the main engines too. The lander also has all the science tools that can be used while landed, while the main ship has the science tools that can only be used in orbit along with a lab. The lander can make it to orbit of kerbin on its own, so it should be able to handle most planets and moons. I still need to test if the whole ship has enough delta v to make it from planet to planet.
Update: after refueling at Minimus it was able to make it to Gilly. After refueling at Gilly it made it to orbit of Moho but again didn’t have enough to land. I’m gonna go back to the VAB and throw some more fuel tanks on the main ship.
Oh and I looked to see the total mass of the ship is 3000 tons.