A wide optic will give a nice flood of the ground in front of you but also illuminate the sky, which is a big waste of light.
If you are going to use 6 LEDs why have them all pointed in the same direction?
How about 4 15 degree optics in a line, two pointed right ahead and two angled off so you cover 45 degrees. Two more pointed a bit lower with no overlap(spill from the others should be fine here) to give 50 degree illumination right in front?