Loving this pack, wihing there were more galactic packs out there! But one thing I have noticed is that one of the most basic things seems to not be configured, at least on my end: There's Bauxtite, Aluminum (Tinker's) Aluminum (Galacticraft) all spawning together, as well as Oil (Buildcraft), Oil (Galacticraft) and Oil (Mekanism) all spawning in the world together. The same problem is unfortunately happening with Nickel Ore and Ferrous Ore!
If you want more Oil, might I suggest making the pack's default config have more Buildcraft geysers appear? Mekanism oil spawns in bubbles underground with no way to tell it's there until you dig into it, Galacticraft's oil spawns in tiny pools above ground, so essentially Buildcraft's geysers seem to be the best bet for Oil.
If you need any help, I could easily tell you the exact line to modify to remove the added ore and oil spawns (Going to do it now in my world and then starting over). I'd also love to help in any capacity for the modpack itself, so if you need some help with the quests, describing them or anything like that, hit me up!
Also, final thing, a suggestion: ExtraTIC and IguanaTweaks would be awesome to add into this modpack, as well as HungerOverhaul. I added all three of those myself, and it's going great! HungerOverhaul is not for everyone though, so I'd understand if it wasn't added in, but ExtraTIC is a definite must, allowing you to make tool parts out of Osmium, Yellorite, and many other metals that you have in the mod right now. IguanaTWeaks is just great for the bility to swap out parts, and the leveling system, but it can be a bit immersion breaking as well, so it's not quite needed.