Are the Defence/Accuracy benefits from a Zakum Helmet worth using up AP for?

Wait it out. You obviously are able to train decently still, so no need to spring for the helm now.

BTW, why did you create another account? Forget your last one's info? :o

No, 2 reasons, 1) Admins won't change your forum name unless you donate, and 2) I had a warning saying "This person hacks!" which apparently means I called someone a hacker, but I didn't like having that on my warnings log.