If you don't like the smithing exploit, you can always wardec any of the Empires.
They are pathetic in military sense and you'll be filthy rich in no time.
Easy mode:
- keep your clan in single party (stewardship skill is very important)
- maximize horse bonuses (cavalry and footmen on horses)
- declare war on NE
- catch their parties (you'll be faster than any of them - easy to avoid big ones)
- sell loads of loot and ransom top-tier prisoners
- you're set for life.