Thanks for giving it a go. Yeah, if you've gone off to a gas giant you're going to be a lighter than them at just 6 mass. The orbit lines work on the green is go go philosophy. So generally you want to hoover up the moons on your way in, and then come back to the gas giants if you're in a completionism mood.
I want to try and get some scaling in, so that they're noticeably bigger than you, but the scaling is causing other issues right now.