just started mining, any tips?

[Shuon]

The problem with this logic is a miner pulls up 4x the amount of ore required to level a crafter.

first, my primary purpose of gathering is to be a self-sustainable crafter. originally, I wanted to keep all my yields so I could proceed to lvl crafts. do you mean that we will most likely end up having too much excess materials? does this apply even if I do GC supplies/leves, or is this only the case if I mine my exp all the way? and finally, is it reallys illy to simply mine for my EXP all the way til 50?