You can also increase the speed of various processes (if you decide it shouldn't take so long for the assembly machine to assemble a circuit for example) in various machines. There used to a be an "easy" config mod for ultimate, but the author decided to stop maintaining it with respect to GT when the packs split. Which is a darn shame because it wouldn't be all that hard to create an "easy" config for the current version of GT so that people that don't like going through the config could just download one. I do happen to like going through configs though and don't have much use for easy settings, sorry guys.
By the way, world generation stuff (such as iridium possibility) is in the GregTech.cfg file under worldgeneration. A value of 100 is 1 ore per chunk, the default is 20, which is 1 in every five chunks. It helps to think of them as percentages. So if you want 3 ore in each chunk, you want a value of 300.
There is now also a super easy joke mode where you can get uu out of dirt and such (but doesn't turn off needing plates).