I have brand new stock springs, 2" spacers, bilstein 5100s and SPC UCA. Broke endlinks first time on the trail post lift and removed the FSB. Seemed fine until I had to make an emergency maneuver on the highway. I am making extended length links now to put the FSB back on. The vehicle is not nearly as capable on road when needing to make these maneuvers. Stiffer springs will help a bit.
As mentioned, the FSB is really easy to remove, give it a shot and see how you feel. I thought it was fine until I needed it so you should try to actually test it in a situation which it would help.
Agreed. The stock springs are rated at something like 400lbs. Way too soft to consider taking the sway bar off.