You’re in direct conversation with your players so you have the most immediate and best feedback possible for what I assume are your goals.
Besides an excellent artifact of your heart’s labors, is the book an Actual Product? Thinking about accessibility and toe-dipping players is important depending on your goals but making the right choices for your players, right now, sounds more valuable.
What I’ve gathered is that you’re getting about a week of anticipatory prep from new players, yeah? A hang-out or two with someone else to walk them through character building? A valuable luxury at this time in your life