I guess it's hard to say how 'artistic' the order is since the anthology is organized chronologically. So maybe there is a choice to include this Shakespeare sonnet over that one (and I might disagree with some of their choices and replace them with other ones anyway), but Shakespeare is always going to come before Yeats if one is going for a chronological presentation, right?
If I decide to add in the Wikipedia content, I might break this into several smaller ebooks by era. Then I could have the Wikipedia overview for that era, followed by my selections, and each ebook would be a reasonable size.