Also wanted to add before I go to bed that Silver is a bit rare but wanted to check if that was your intentions. You know me I don't mind what you want it at but someone who has done a lot of testing silver is one them ores that you will run out a lot on and not something you can depend on as a main component. Where you have Copper/Tin all the time and your always in need of the iron well in this case it's Copper/Tin then iron then silver is what you will never have enough of.
Like I said only telling you just to confirm that is your attentions or not
BTW 1.4.2 is out maybe this is a good time for one big last surprise for 1.3.2 of GregTech before IC goes 1.4.2 and I think it will beta really soon because of the big push especially for ForgeCraft!