The main thing with the ESP is the centering of the steering wheel after a lift. If it's off my more than 2 degrees it gets all kinds of pissed.
In regards to your tires. You are going to have to buy 15" rims for them because I believe none of the JK's come with 15's anymore. Also based on the rear link setup they put the uppers extremely close to the tire now. So new wheels are going to be a must when lifting any JK. Or at the minimum putting on spacers to accomodate for the wider tires.
To put 33's on a JK however the most you will need is a 1" BL. You probably wouldn't even need that in all honesty as the Rubicon models now come with a 32" tire stock.