I think you can spend your time in more productive ways than what WK has to offer you, given that you have more or less an ok knowledge of joujo kanji.
You already have a notion of kanji that with exposure (that you’ll not find in WK) will get solidified. So go for exposure!! Read, watch shows!!
And if you have an Anki routine, you can improve over that routine as well. I would go this way… trying to practice with your already known kanji and vocab; then make your word count flourish by making a reading routine, and throw progressively that into the vocab SRS routine.
anyway my way of viewing things… as WK started as one of my main platforms for learning, and as it should be, is progressively leaving the scene in my studies. It has serve its function 
… but in the end I’m learning japanese to use it…