So if im reading the question right, you have this weeks book and want to wait until reset to turn it in. Your concern is that you dont want that to block you from getting next weeks book. If that is the situation, then you have nothing to worry about. When you ask Khloe for a book, all the game checks is whether you have one in your inventory now and whether you have already received one since the most recent weekly reset. On turning in the book, all that gets checked is whether the book is expired or not and what reward you qualify for(and possibly if youve done 9 tasks and applied your stickers - i think if you try to turn one in early theres a prompt and im just kinda assuming that if you have stickers unchecked it makes you do those first although ive never thought to test this).

If i read your post wrong and what you have is last weeks book you want to hold off turning in and still receive this weeks then that wont work. Youd hit the double whammy of your old book being expired, and missing out on this weeks.