That spread will do just fine. Try to have a variety of colors for your sea witches, that way if the fish seem to be keying into a certain color you can switch 'em out. Maybe throw in a few islanders and a green machine. Put that purple and black witch deep on a planer with some piano wire and try to get a wahoo. As far as arranging the spread, I build it around the spreader bar. Put the bar in the middle about 100 feet back, short riggers a little closer, and long riggers a little further. Add a few flat lines in close and a long shotgun bait.
Thomas Jenkins, duck hunting and fly fishing around Mathews County, VA.
Perseverance- 26' Cape Horn
Unnamed- 18' Parker
TailyPo- 16' Carolina Skiff