Reply to New Studio Setup

Just looking for advice on what I'll need and on a budget. I'm on the verge of moving from a 1 bed flat to a 2 bed. My girlfriend has allowed me to build a studio into the second bedroom.

I currently have a custom high spec PC running Traktor and Ableton Suite 8 on it. I have a VCI 100 controller. I have a pair of Sennheiser HD heaphones. I have a pair of AMAZING Sony 3-way speakers along with a 120W 5.1 sound system and an Audio2DJ USB sound card.

I just want to have an idea of what else I might need to develop a little studio where I can actually create and produce tracks as well as DJing.

Also, looking to do it for as cheap as possible as obviously moving is gonna cost some buckage!