1. Mekanism bronze pickaxe recipe conflicts with TE recipe. Might disable the Mek recipe so that those unaware of the TE recipe aren't confused
2. Starting with Mekanism steel production might be a little confusing. Are you planning on including something to point users in the right direction?
3. Started looking into Simply Hammers, but getting a slimeball is a big pain without Tinkers, since BoP makes it hard to find a jungle. I see recipes in NEI for the donator hammers, that probably shouldn't be craftable. Wasn't able to verify that they are actually craftable.
4. Forestry bronze recipe is enabled (3 copper ingots + 1 tin ingot = 4 bronze ingots). Not sure if you want to disable that since you have the AE2 grind stone for early game alloys