I got that book. It was a good reference but was kinda useless for me since there were no trips that went from Shediac, NB to Halifax (primarily via Highway 2). I would recommend a provincial map. Visit http://www.novascotia.com/ and order the various books and maps (all free last time I checked). I also got a map book and photocopied the pages I need (map books I find tend to be more detailed). There aren't too many back roads and you might need to share with the logging trucks but otherwise it's pretty decent cycling.

The book did help for the other portion of my trip (Halifax to Digby). It was supposed to be Yarmouth but a busted rack stopped that. That said, however, Highway 1 is the best to take from Yarmouth to go from east to west via the north-east side of the province if you want a direct route. You can also take the 3 on the south-east side as that will take you through all the fishing villages but can be a bit tougher from what I heard. (I haven't done this one as I never had enough time).

A bit of warning about the 1 however. It does merge on occassion with the 101, which is the main highway. There is a rough gravel (stone? rock?) shoulder (it's the bumping and jarring from the shoulder that caused the break on my rack I suspect). I would recommend going to Digby and the Digby Neck for whale watching (lots on the Neck itself). Digby is famous for it's scallops and there are a couple of places I can recommend:

Food

Accommodation

I hope this helps. If you have more direct questions, perhaps we could start a new thread in the touring section. If you are able to go longer, I can highly recommend the Cabot Trail. I recently found some old photos when the SO and I did it in '98 and I'd like to go back to do it again -- properly (I wasn't prepared back then -- then again, I don't think I'm ever prepared). It is considered to be one of the most challenging tours in Canada and it lives up the name. Food is good and the views are amazing.