Every galacticraft game I have made, I always have one problem. I have too much copper. There are barely any uses for copper and it is the easiest recourse to find (except coal). Could there please be some recipe changes to use more copper?
How many mods do you have that gen copper ore? If you have other mods that add it, you can disable it in the config files. I honestly don't know or pay attention to surplus anything. I just have quarries and the mining that I do sort into containers and process what I need when I need it, with only a few stacks of ingots/plates in standby.