The rear shocks are identical except length, fronts are valved slightly different. I would personally go for the 5100s and set the fronts at the second notch. That'll give about 1" lift and make it look much better. The rear height won't change.
I just put a set of 5100s on my 3rd gen. Wow! Loving them. I used them in a lift setting on the second perch and I don't think I can get a smoother ride. They aren't as good as if you had them on the lowest setting but I would give them a thumbs up.
The rear shocks are identical except length, fronts are valved slightly different. I would personally go for the 5100s and set the fronts at the second notch. That'll give about 1" lift and make it look much better. The rear height won't change.