Right, so get one weapon to Zeta. Copy all the others and put them in as glams, turn in the partial weapons in order to make the Anima better.
Repeat with one "lux", But these can't be turned in anywhere, so are completely spare once glam made?
I doubt that I'll be able to get anything good out of Eureka, it'll be dead content before I get that far...

My own personal cost bennifit analysis says that for the time it takes, the form made by using the thanvanian mist looks best. It's just not worth it to me to push them all through the books just to make them more pleasingly decorative. Maybe the anima gem fates... maybe not.