I don't know how Sony's bloatware backup works but hopefully it will put your User files back in their new folders and not import settings which are a corruption path.
I would decide what Sony software to reimport based on whether you use it or not. If you reimport everything then you are defeating the purpose of a clean reinstall which is to overcome corrupting factory crapware and useless utilties which have much better versions built into Win7.
For example, a cam will work with its driver delivered by Win7 or Sony website and any programs like Yahoo that you cam with. The Sony software package will only give extra features that you may not want, and likely try to start up with Windows which is unnecessary. Most factory bloatware isn't needed.