This is perfect for the fast explorers (overkill on luckies) at event time. The only question is whether you want to wait that long because it takes so long to create books. I haven't bothered on my first few (been using 12 manuscripts), but I think I will on the rest. It's not so bad at lower level book costs, but at 5 tomes per codex, it looks like about 4 months each.