I think the item should go first because it's more important than the recipe. You use the recipe to create the item, but since the item is the end goal I think that's the most important piece of info for people to see.
And yeah, a standard template would definitely help!
Yep, it definitely would- right now it really shows that different editors work on each page, as the style that each page is presented in can be jarringly different between pages. I wonder if it's possible to have a little sidebar detailing all the types of page you can make and lets you substitute a base template for each type.
I'm more in favor of the first one (obviously, that's the one I wrote myself xD)
I think the quantity needed is more relevant to the actual recipe/item page, and having that information duplicated on other pages will cause big problems when the recipes change. That would be a ton of pages to update information on.