If you don't mind re-embarking, taking bronze ores (3 casserite and 3 copper), some(8 ish) bit. coal, 1 charcoal and about 6-8 dogs. The dogs will take care of a lot of undead or evils for you (even untrained) and they breed like rabbits. As soon as you can, make either 3 picks and 3 axes out of your bronze ores, or 6 serrated discs. The picks/axes help tremendously in combat (evils are unarmoured and die very quickly to bronze) as well as letting you get underground quickly or scavenge all the wood you can before it dies/is too dangerous. The discs will provide a passive defensive (if you want that instead), with 2 discs per trap on a three wide corridor, you'll get 6 attacks which will mostly kill them. It vaporises undead nicely and disables/kills other evils most of the time. Dogs and a dwarf with a crossbow will finish them. It's a nice thing to add 1 point off ambusher to any military-only dwarf, it's a free weapon and a tiny bit of armour for 1 embark point.
I tend to set up a smelter, a metalsmith and a carpenter's workshop (for shields) straight away on evil or mixed/evil embarks. A furnace operator, a carpenter and a metal smith and you'll have the lot done in 10 days if you have coal. You never know what you'll get, so prepare as early as possible. Undead giant badgers are a nuisance with bronze and dogs, a terror without.