If you need to take in more stuff than your crafting table can handle, either upgrade your crafting table to one which has storage in it or use chest with satellite pipe right next to the crafting table.
Assign an id to the satellite pipe, assign the same id to the crafting pipe satellite id section and then - still in the crafting pipe - relocate all overflowing items to the satellite.
Grasping all the nuances in logistics pipes efficiency does take some time. Crafting pipes on furnaces or macerators is not something i'd recommend. They're always too slow even with 8 overclockers
and you end up in jams.
Maybe a better option would be to automatically macerate and cook all the metals in separate network and then deliver them to your main network.
I have something like this up in my album: http://imgur.com/a/GRVxI