Well, the Ultimate Weapon Kit is a quest that you would do like 5 times on your life.
I would advice you to use Le Bot one with necromancer to kill all bosses, then, when you just need the "Great Ornament Warhammer" you stop the bot and farm manually.
It would be a lot hard to make a good bot for this quest, since the Great Ornament Warhammer drop rate is something near 10%, maybe you would have to kill all bosses again to find the hammer.
Another option is to use Le Bot with the "Get all drops" enabled.