Considering a staggered set up for your WK2?
Please don't. For one you'll piss off Schleprock to no end and two if the Jeep would perform better with a staggered set up I think the crew at SRT might have realized the fact. I'm not saying stick to the 295/45/20 size but whatever you choose keep them the same. That is all.
My Mopar YouTube channel
2008 SRT8 ,2011 X, 2014 Overland, 2012 SRT8 ,2014 Durango RT
2014 SRT, 2008 426, Hellcat Challenger