Originally Posted by
greycap7
I know you said Windows, but have you considered the Macbook Air? It's nearly the gold standard for ultra portables.
Gold Standard? Not really. The current Macbook Air (besides not coming close to delivering what the OP asked for), is a bit old and is in real need of an update.
Screen resolution isn't high enough and it would require a full Windows 10 license, putting the price over his limit.