First thing is to consider where the car will spend the majority of its time. If it will be used 99% of the time on the road, then build it 99% road friendly with compliant connections rather than harsh steel-to-steel connections like Heim ends at the bar/frame connection. I like using OEM-type rubber control arm bushings on a car that will be operated mainly on the street in order to better control NVH (noise, vibration and harshness) and to allow some compliance in negotiating driveways and such where a ladder bar will bind up with solid mounts and possibly break or bend components.

As has been cussed and discussed on this board many times, I much prefer a Watt's Link to a Panhard bar. I you set it up properly, it should work very well for you.