Adjust your tire pressure first as JDs said. I'm not familiar with the spring rate of Fabtech springs but from the looks of the 2nd pic, my bet would be the shocks are way to stiff, probably why there weren't many reviews. Old Man Emu shocks are great, that's all I can recommend because that's all I have experience with. I've heard Rancho 9000 and Skyjacker Hydros are good also.
I'd personally stay away from the "cheap disco" option. I've had cheap discos in the past that liked to spit out the pins and break on curvy roads...thats no fun! Do it right and spend the $150 for JKS Quicker discos, you'll be very happy with how easy they are to use, plus they come with bar pins to hold them on the frame when disconnected, no bun-jee cords needed. Your front end flex will be greatly increased, so watch out for tire/fender clearance, as well as brake line length, and in some cases, aftermarket front trac bars will hit the diff at full flex.