I space my lessons out to maintain a constant workload, I don’t particularly care about getting through WK as quickly as possible. Level 11 took me more than a month
Thing is, since WK’s vocabularly and kanji are not based on frequency of use or actual usefulness, relying on WK to teach you vocabulary can delay learning frequently used words by quite a bit.
用いる is a great word to help the meaning of 用 stick, but 使う - a more frequently used word - doesn’t show up until 6 levels later. 可愛い is a word I see quite a lot, and that won’t show up until level 18. Same goes for 非常に except thats a level later still. 訳 doesn’t show up until level 32. But all of those (用いる excluded) are among the first 1000 words learned through Torii, because of how often they are used.
Rushing through WK would teach you all of those and more quickly enough I suppose - but also not teach a lot of other commonly used words, so I don’t think you’d gain much considering you still wouldn’t make much sense of what you read - doubly so because if you’re going through WK at that pace you probably won’t be able to keep up with other sources for grammar and vocab.
I prefer having duplicates but being faster in building a working knowledge of the language to not having duplicates but delaying some of the most common words I see until who knows when. But of course, YMMV and everybody learns differently.