It seems you're making everything unnecessarily complicated here. It's a lot of bother to go to, even if it is slightly cheaper in the long run, especially for your final year when really you need stability to perform to the best of your ability. Hostels really aren't nice places to stay either, if you can help it. If I were you I would ask to get my accommodation changed, or just keep my head down and work hard whilst staying at uni. It's only a year, it goes faster than you realise, and you really don't need all that extra fuss of commuting and all that storage rubbish if you can help it.