I too live up here. Couple hours away from Rupert. So, I offer a guideline, because the drive from Terrace to Rupert and Prince Rupert itself can be drop dead gorgeous. When you get to Kitwanga, check the weather forecast and if`s calling for nice, then absolutely, you want to drive out. On the other hand, if the weather is fog and rain....I`d say turn left and eastward ho.
This is a page from my Blog and has some Prince Rupert pix. Just ignore the bbq stuff. It also has some info and pix from Kitwanga and surrounding areas.
http://mrgwh.blogspot.ca/2012_09_01_archive.htmlGary Haupt