XMLSitemap- Is it OK to add nodes both by content type and menu?

Question

I'm making a sitemap using the XML Sitemap module. The module and its submodules allow nodes to be added to the sitemap from the content type configuration screen as well as the menu configuration screen.

So, for example, I can add all nodes of type Basic page to the sitemap, and then I can add all links in the Primary links menu (many of which are nodes of type Basic page) to the sitemap as well.

My question: Is doing this OK? Should I be worried about having duplication between adding the content types and adding the menus? Or is this nothing to worry about?