Ok. Go
here (complete blacksmithy FAQ) and scroll down a bit to find the Weapon Specialization and Ornate Plans for Armorsmithy quest sections. From my personal experience you will need over 320 bars of mithril, 40 bars of truesilver and some rare components to complete the quests.
Good luck.
P.S. It is totally not worth it. I'm 291 now and I cannot sell (to make profit over the cost of components) or would not wear a single armor piece I can make.