Hi Jamie

get a laptop.. spend up to 1900e (thats plenty trust me)
get the m-audio FW410 soundcard - 450e
get the abelton + Ozone controller bundle - 650e

spend the rest on sweets.

You may want to opt for a controller thats full of sliders and/or knobs though. Its weird because abelton dont seem to be bundling these types of controller with live anymore.

http://www.ableton.com/index.php?main=shop