If you render eight times, why don't you just change the directory where you render your images to? That's how I do it. No need to move things to a new directory. No need to rename the files. Just a couple clicks to change from S to SW directory etc...
Once all eight directions are rendered, then it's off to SBB for my storyboard.
Under the settings tab there is a button "save user settings" or something like that. It will save the current settings so you don't have to browse for your main save directory each time....