Efficient back up and transfer to new n7

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http://forums.androidcentral.com – I'm planning to leave my n7 with my husband in the Caribbean and return home to the UK. Is there an efficient way I can back up everything on the current then transfer to a new one at a later date? Also, the main uses for my tablet are reading, browsing the net, the odd video/film and Candy Crush lol. Would it be worth getting the n7 2013? (HowTos)