Welcome to the Jeep world. I sold my 2010 Camaro and haven't thought about it for a single day; and I thought I loved that car. I put so much time and effort into making it exactly what I wanted. Then I got my Jeep!!! Just felt right. I went 3.5" and 35s and really don't plan to wheel much. I would love to take a trip and get it a little dirty but I know that will create an addiction and I've already spent a little money on this thing. Mine drives great every day and it stands out. There are a lot of 2.5" lifts on 35s around my area but I love the 3.5" space. That being said, I'm on the stock shaft and fully expect one day I will need to replace it, and I'm ready to do that right now if it happened.
One thing to consider if you go 35s is cost. Tires are more, you'll need a bumper to carry the spare, and the list will just keep rolling.
2012 JKU, 3.5" Rubicon Express lift, 35" Nitto Trail Grapplers, Pro Comp 17's, Smittybilt SRC rock rails, XRC front bumper with XRC8000 winch, Wurx rear bumper, and other stuff that's cool!!!