Reply to Digital DJ, what to buy first

I want to start Digital Djing. I own ableton, launchpad, reason 5, a radium keyboard, and an older Mac powerbook. I want to add some DJing capabilities. I use to own technics 1200's and miss them dearly. With so many options on the market and a somewhat limited budget i am a bit overwhelmed. What would you community members recommend i get first? My end goal would be to perform every now and then at small clubs or lounges in Denver, Colorado. Do i need to start with the hardware controller or can i minimize investment with just buying the software? What software should I get; traktor, serrato, or other? I would like to integrate ableton into the performance with the DJing software and hardware. Thank you for your input.

Regards,

Bob