I did try the sway bar & hitch pin mods & on my set up it started having problems around the 27" drop out mark. This is with OME yellow CC bushings.
Getting 11.3" of travel out of a shock that compresses to 15.25" is also a big deal. The only negative I have herd is they are very stiff... this is why I have stayed away from getting them. (EDITED LATER: I now have these shocks. They are firm & stable). As far as the OME 1.5" coils, they flex very well to that certain point. The coil springs offer a ride that a leaf spring will never offer, but In my opinion the front suspension can't even compare to the leaf spring over full axle fj40 I use to have. It's a tradeoff, ride or flex.