First off - welcome to 3CF!
Congrats on the new ride. Post some pics when you can.
On to your question - you really only have two choices from what I know.
#1 - NoESP device from Z Automotive. I'm actually selling one right now in the F/S threads, but unfortunately I think it's already spoken for. You tap this into the purple/light blue wire which you can find in a few places (I can give more detail if you need), and then you tap it into the stock ESP OFF button. This then gives you the SRT function - press the ESP OFF button for partial turn off, or hold it down for full turn off. This is a stealth install option.
#2 - You can achieve the same function by just tapping a switch into that purple/light blue wire. I've added a control panel in the pouch next to the gear shift, which is why I decided not to use the Z Auto device. So I have a toggle switch that is in essence always ON - and I can switch it to OFF... which effectively cuts the purple/light blue wire - and that's how you cut everything off and have some real fun.
I guess there is a third way - you can simply unplug the harness under the center console where the purple/light blue wire goes and it will shut everything off if you want to give her a spin to see what it feels like. But obviously a switch is a better long term solution.
And remember - this doesn't just shut down traction control. This will shut down everything... yaw, ABS, etc. So make sure you are driving safely when playing.
Feel free to ask questions if you need.