The Berkley was designed for SP and drop shotting. Typical jig head weights would be to 30g or thereabouts. Casting a 125g jig or even "working" such a weight could be excessive for that particular rod. I don't own such an outfit, but try it and report back. No real rules in this game, just guidelines. The question is not whether the gear can handle the fish, more a matter of whether it can handle abuse it will get from the act of jigging.
It is noteable that Daiwa and Shimano produce "jig" versions of their popular 4000 sized spinning reels, e.g. Daiwa Frearms 4500 versus Frearms 4500 "J" - for jigging. The continuous "slamming" of the bail assembly and antireverse will cause premature failure of regular spinning reels. Higher quality reels like the Certate should be capable of handling the fish but i am unsure whether it has a jigging pedigree like the equivalent Stella. Sooshee probably has the skinny on this sort of thing.