It seems that there are two issues brought up by your post: 1) If you construct your website's internal linking advantageously, you can channel PR to the inner pages of your choosing. 2) Whether higher PR on those same inner pages will translate to higher ranking in the search results has been debated to death on this and other forums. DP members have widely-varying, strongly-held opinions on that controversial topic. I can't resolve it.
I think to some extent the PR of inner pages will move up provided you effectively link them with the home page
If the raise of the PR affects your homepages ranking positive, then it will likely have less but still positive affect on your inner pages.