You could use the icons from the winter board theme. I had seen some tweak for the notification centre that makes it exactly like iOS 7, go to iDownloadBlog and search notification centre tweaks. SBSettings and/or NCSettings with an iOS 7 theme for control centre (it looks vastly different, but better than nothing).
The app UIs themselves and pretty damn impossible to replicate. You can do small bits and pieces, like the notes app, but i don't think you can even get rid of the skeumorphism and heavy chrome Nav bars.