So my home computer is a mac book pro is my only computer with my music and backups and everything on my iphone 5. I would like to use my work computer to buy, and backup and install updates such as ios7 on my iphone. My work computer is a windows machine with the latest version of itunes. So all I have to do is authorize my work computer and I can have a copy of everything on my work computer also? There will be no problems? It's just like having it at home?