Board Thread:Fleet's Prepared-ness/@comment-25732404-20150718154635/@comment-25174240-20150719220948

In terms of resources, about 50k each of everything should be enough for normal. Do remember that events last about 2 weeks, so you have time to run some expeditions and regain some during the event itself.

Therefore intense stockpiling is meant for fleets that are ready in terms of training and equipment and need the stockpile to push through they whole event on hard within 1 to 2 days.

As for recipes, there isn't a single best recipe for anything but there are several that have been tested. I'll leave a link below which is from this wikia.Hopefully it will help you to make an informed decision.

http://kancolle.wikia.com/wiki/Development#Naval_Aircraft