hi, i need a new work station that might work many hours every day but i don't have too much space and it will be great if i could disconnect the computer from the workstation and continue in other place so i think about a compact monitor+keyboard+mouse on the desktop and folded macbook as a computer case (when i'm not using its monitor) do you think the plastic macbook built to work 7-8-9 hours in a row (every day)? won't it over-heat like hell ? (i'm not worried about the cpu, the hard-drive and other components can really damage by that)? maybe i should peak an aluminum model to spread the heat better? i'll be happy to hear any opinion and thoughts, thanks!