Suggestions needed for a mobile working set up with RSI and a bad back

Hi all I have RSI in my right hand and also a bad back that seems to be the result […]

Hi all

I have RSI in my right hand and also a bad back that seems to be the result of carrying a heavy laptop around. The back problem now is such that even a lighter 1.3kg MacBook Air is a bit too heavy – I think 1kg would be the limit -but the problem with laptops that light is that the ergonomics of sitting with a small screen aren’t good and don’t help my back. There is a locker at work where I would be prepared to leave a cheap laptop (not my MacBook Pro 13″ – which is staying at home for now) – but just wondering if anyone else had any suggestions. Thanks!