Haha, fair enough! I actually know the feeling. It's what I did with many games, but especially Dark Souls and DS2. I spent MONTHS on there telling people to put 80% of their points into Stamina but only a few listened...
OK yeah, 5 stones, I checked and you get them a bit later to unlock Hall of Secrets. There's a guide on how to rush to it but I think I'll just play through it at regular pace. I'll probably have them around level 10-12 I guess, that's fine right?
Hm also I read that apparently some update changed it so that you can only buy 1 of each book and they don't restock each level. Haha oh well! Seems like it would've been pretty OP