I think that I can help you out here because I have recently tried out the same, actually previously I was thinking of doing a restore from back up just because I did not wanted to lose any data, Below are the ones I was concerned about
:
Text messages
Apps and settings
Bookmarks
Camera roll pictures
But then I thought that I won’t have much problem in getting them back again, so then I activated my phone as new phone and I think that it is just doing great, if even you are concerned with the same then I think that you should go for “activating as new phone”
Bookmarks