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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@Gordon
It might be worth measuring the current draw of the 433Mhz transmitter - I think it is probably very low when it isn't transmitting, so you may not have to worry about disconnecting it.
VBEN on the CC3000 is controlled by the Espruino already, and it does power down the CC3000 module. However because the module itself contains a voltage regulator that isn't powered down, the module will always draw around 4mA (unless disconnected somehow).
FETs could be a good idea for the disconnection - see this page for more info. You could even use a Relay module instead if you want an easy solution. They will draw a bit of power when they're on - but if they are off for most of the time then it'd be fine.