You will get lots of crude bronze in crush bone. If you just loot rotting bodies, you will prolly find some that way. The wasps and skellies do drop the right parts, but they are uncommon to rare drops. Just keep trying. The very first toon I ever made was a ranger, and I was level 12 before I finished the whole quest. Persistence. Also, try calling on your fellow players for help. Do an /ooc saying that you're looking for certain pieces for your armour. Someone will surely find them if you can't. Be sure to familiarize yourself with the loc function, because that is how most people will tell you where to find the mob that has dropped the peice you need.
Good Luck!
54 halfling druid- Blitzwolf Thundepaw on Brell