According to my point of view, you must change the default URL structure of your WordPress Blog. If you are a WordPress blogger than you must think that which is the best permalink structure for better SEO. Everybody wants a better SEO and no one knows all rules of Google for SEO. But for WordPress and URL structure, I must say you can go with below structure.
You can see the same permalink structure in my blog. You can also use year/month/date structure but it makes URL little bit longer which is not advisable. If you want to guide your visitor in better way than you can keep this format so visitors can surf other pages by deleting post name from URL and can see monthly archives and so on.
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