uh...
What you can backup is your pictures, documnets, video, music,desktop and all that personal stuff,
But... the tile order, no.
But,,, the apps you downloaded with your email. on a different computer it will say you owned these apps and you can't redownload it, just go to my apps and look for apps haven't installed of course if you have a slow connection then, ya it will take some time. Remember to note down the programs you installed in programs and features they are not same as windows 8 apps.
Perhaps, for the login, you could re login yourself.