Yeah, sometimes we overthink them, and sometimes we don't think about them enough. Try to look at it like going to the grocery store. You know VEGETABLES is just the main tag, and the specific veggies you buy all falls under that tag. So shoot for the primary tags for at least 3 of your 5 choices, then you can get more specific about the type of veggies (those other two tags). Somehow, that line of thinking works for me :-)