I generated my world in 3.2.14 and have a chalcopyrite vein so it should be fine.
Thanks for the tip, I've got the first few machines made and have had my macerators and blast furnaces running non stop with iron tin and copper so I should be good in resources. Now If I could just find galena/lead so I can make some power storage before I set up the machines and generate power. I've been digging holes all over and no luck. Driving me up the wall lol.
And that's why GregTech oregen is the best in the business. I do a grid, one vertical shaft to bedrock every 3 chunks (every 50 blocks or so). Early game, use a bazillion ladders, I finally was able to make myself a NanoSuit with flight capability which eliminates the need for the ladders.