I love how everyone is suggesting mid to late game solutions for an early game quandary. I hear BigDig makes ore gen ridiculous, never used it though, can't really vouch for its quality.
If you are prepared to do some config diving you can tweak COFH cores ore distribution generation. Also if your pack uses Dense Ores you can tweak the likely hood dense ord spawns. I think you can also specify yeild too, don't quote me on that though.
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