For the WideView, you'll need to get to Nagoya first. Here's a sample itinerary for you from Tokyo through to Kanazawa via WideView. The WideView use is not the fastest way however, which is covered by this route.
The JR Pass can be used on all bullet train lines so you will be fine for your itinerary. Please note that you will not be able to use Nozomi class bullets, but there are always alternative class bullets (Sakura, Hikari, Kodama) that cover the same lines and travel at the same top speeds.
You may want to think about stopping at either Hiroshima or Kanazawa, but maybe not both. Your current 7 day schedule is quite full, and would benefit from more time spent at some of the locations, especially when you have long journeys, such as the Tokyo > Kanazawa leg.
To build a full schedule, you can look up precise train timetables and costs at the Hyperdia travel planning website and learn how to use Hyperdia through our video blog. I'll be happy to answer any questions you may have as you build your route!
Hope this helps!