I use the same script to raise inscription or make spellbook. Once you have all the book, you can stop and restart with the book u want to kept. Honestly, how many Spider book do u need. I just choice to kept, 3 mod, Spider, elemental, dragon, reptile. I never try the option to donate, I might one day.
This why I made TG Crafting Factory. One of th eotion is to make scroll. so If you have a lumberjack and cook u can get free supply of scroll.