No, only way to get a bigger front axle is with Rubicon trim (or aftermarket, obviously).
I personally vowed to never buy another vehicle with an open diff on the drive axle; I just don't like traction control applying brakes when I'm trying to accelerate. I'd go LSD for that reason alone; the bigger axle is icing on the cake.
SelecTrac would make winter driving much less stressful; I'm sure in NJ you see mixed wet/ice/slush conditions where you would normally be switching between 2H and 4H nonstop to maintain traction. SelecTrac just automates that process, which may or may not matter to you. I think it's kind of fun shifting the transfer case in reaction to traction loss, but I also drive a manual transmission so it makes sense for me.