Not really a waste of books when thats the highest possible jump i could see. i also added diffrent options so that this person may use what ever is best suited to them and easier for them and they are comfortable with. how ever they wish to use their books is their choice.

and you will see i said they "may or may not" need to use a book for the +4 jump. which means its optional. its possible to make even a +5 jump without a book but you'll just have to compound over and over and over till luck is on your side. but +4 is easier and possible with out books often you can get 3/5 tries doing a +4 jump often 5/5 or 0/5 all depends on your own luck and alchemy lvl. if they want a garantee then a book "may" be optional.

so unless you can come up with a recipe that does not 'waste' books. then please go right ahead.