When I started out building my Jeep, I had put on a 1.25" shackle lift (2.5" longer than stock) and the time that it showed up the worst was on the street, so the "just a daily driver" approach doesn't float. Gassing it even a little bit from a stop, my drivehsaft angles were so mismatched that you could feel the vibrations in the Jeep. Not good. Also, the front of the front spring was so close to the ground that it kills your approach angle.
Now, sure, you can correct the rear angle so your driveshaft angles aren't so bad - unbolt the axle, deal with degree shims, etc. Now all of a sudden though the simple installation of shackles isn't so simple. Plus it looks really dumb.
Body lifts -- if you go too high, you will add stress to the body mounts. Really, any height at all adds stress to the body mounts, as you are cantilevering the body off of the frame. 1" adds a little. 3" adds a lot. And 3" body lifts look dumb too.
So, my approach? Modify each portion of the jeep a little bit. A little shackle lift, a little body lift, a little suspension lift. This makes a nicely balanced Jeep.
I have the JKS 1.25" body lift. (right in the middle of the road between nothing and a 2 or 3")
I have 1" longer shackles for a 1/2" lift at the axles. (again, right in the middle of nothing and a really long shackle.)
I have a 3" suspension lift. (you guessed it, right in the middle of nothing and a 4.5" or higher. I still even run the slip yoke. /wwwthreads_images/icons/blush.gif
I also have TJ flares, which gives you more room. This is a simple trim job - nothing extreme.
I can flex 33s nicely on the trail without rubbing a single bit. I could run 35s on the street if I wanted to. There's plenty of room. I may be able to flex 35s with a bit of rub -- haven't tried.
Bottom line, modify each part of the jeep a little, and you will likely be ok. Modify any one part a lot, and you will be getting into more difficulty.
High body lifts are a hassle, and not good for the jeep.
High suspension lifts don't flex as much with a high arched spring.
High shackle lifts aren't good for your angles, or for vibrations without correcting the situation.
Just my $0.02
Pete
"Don't fall into the traps laid by society" -- Henry Lee Summer.