Your chassis really can't be too stiff, so brace it as much as you like.
Personally, I think the best rough road setup is probably stock, maybe with uprated struts, but stock springs. I'm running a stiffer-than-stock setup now, and train tracks and potholes are much more noticeable. The same tracks that I barely felt at 40mph feel like I'm going to lose a filling now.
You could look into some gravel rally setups, they tend to run small or no swaybar to keep the suspension independent, but also some brutally harsh coilover rates, so that might not be great for a daily driver.