You could get to around level 26 or 27 going full speed. The kanji in wk are not in order of JLPT level, but instead in order of simplicity in appearance and composition, so there is a good chance a lot of the kanji you cover in these levels might still be new to you, but it is hard to know as you are aiming to do N2 so I assume you already know quite a bit.
(also, either way, I would start wk now. It is a great resource for learning kanji even if it is not directly related to the JLPT and in the long term, I assume getting better at Japanese is also your goal.)
That.
But 52% is a good chunk and I could use the review on other stuff–especially readings. Nothing more frustrating on the JLPT than knowing the meaning of a sentence but not the reading of the kanji/grammar point they’re specifically asking for.





(Thanks, really! It’s a big help!)