my 2c… the books in the beginner book club tend to vary a bit… really will depend on where you are on your level. I have tried a few of the beginner books and dropped them and come back later. Aside from my very book being a beginner book club, in general I have found (with my life) and previous lack of grammar, etc…it wasn’t possible to enjoy the book and keep up with the club…also the stories didn’t pull me in (that will make a huge impact on if you want to continue)…
my first book was: (Girls’ Last Tour) Back in early 2019…was brutal…barely had any N4…but I was super happy i got through it…but I finished with the help of so many awesome people on the forums…(this isn’t a hard manga btw)
Then I thought I’d try (Flying Witch) harder but again did it…but found that it was really taking me many hours each night and most of my weekend just to be able to keep up and understand… (mostly lack of grammar)…vocab hurts but grammar and lack of reading experience hurt more…
Went back to the ABBC and have had much less headaches… though it’s gotten easier to the point that I can (depending on the extent of the vocab) usually get through a chapter in 60-90 min depending which is actually making the reading fun! Also the stories (currently doing Teasing Master - we are starting Vol 5 soon! It’s cute and fun and easy to read…brings that joy of learning and reading together …
Decided to try the BBC again and (Zenitendou, The Mysterious Sweet Shop) but it was too soon for me and gave up on that one early!..was too hard for me at the time (will likely go back to it at some point)… Also tried (The Mysterious Town Beyond the Mist) but it was too much text to process and keep up with the club…(and didn’t get into the story as much so read some and put it down)…[same with Kiki’s…hmm…probably because these stories didn’t really hold my interest as much maybe…
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Then tried (Ogawa Mimei: Collection of Children’s Stories)…and this was IMO not the best pick for the beginner club…had actually had some native speakers was asking for help with some stuff and all of them said this is ‘beginner’ they were shocked… in any case for me that wasn’t a great pick (older writing style and kind of weird stories…just not my thing and too hard)…so dropped that one after a couple of the stories.
But then I saw last year Death Note was coming and I saw the anime 15 years ago maybe…and knew the story and thought why not…I can say it’s taken me quite a bit more time than ABBC, and it’s text heavy but not impossible. Not sure how much is because I know the story and now much is because now I have about 40% of the N3 grammar knowledge…but that combined I was able to get through each week within about 10 hours (sometimes a few pages go fast, then get bogged down an hour per page)…varied a bit…but it has been doable with everything. I figure if I can spend an hour or so a night and a couple of hours here and there and get it wrapped up then it’s within my ability…
I do feel like Death Note is worthy of being in the Beginner category, but it’s closer to the upper beginner level, which is fine…that’s what the forums are for…when stuck ask questions 
If you want to read it…give it a shot…see how it goes…the upside of buying physical books…can always go back them later
If you find the time commitment is too high, content to difficult, boring/not interesting, etc…no matter what book it is…can always put it down and pick up something different 
----edit----
should add that I also picked up rental niichan… and because of these book clubs and the resources remain online here been able to read this w/o the club - currently in vol 3… and it’s also something I can get through a chapter in about 60 min or so… aside from being sad…hoping for a happy ending (but it’s a Japanese story…
) it’s very approachable and easy to read (though it is an ABBC book).