FAQ: Zoadiac Weapons & You

[Nekodar]

I've seen people with upgraded shields for the paladin set, but I know that takes far fewer books. I hope you can complete all 9 books this patch. After all it's only ilvl 100 you are upgrading to, and supposedly the next big patch will increase that to 110 and make the stats customizable. Although this leads to more questions, if they do in fact make it customizable, will you have to grind more books to switch around your stats?

You can complete all 9 books this patch. There's even players that have done that... (at least one, saw pic on reddit of user with Sphairai Animus)

[Shirai]

You can complete all 9 books this patch. There's even players that have done that... (at least one, saw pic on reddit of user with Sphairai Animus)

Indeed, which brings me to believe that the system message about the 4 available trials means that you can currently only upgrade the 4 primary stats of your weapon and that perhaps later on you will be able to add or change to custom stats.
For now, that's only speculation though.