Agreed on driving it around the block to get t it to settle, but looks like you are ready for some off road 4x4! How far up the shock body do you have the spring perch set? What shocks does Wilkinson sell and what are the compressed and uncompressed lengths? What spring rates did he supply?
You'll probably need to go with zero preload and wind the springs down on the perch to drop the height, then to avoid the springs coming unseated over potholes etc. you'll want some helper springs to take up the slack. Some vendors suggest to zip tie the spring to the upper perch, but that's a half assed solution IMO.
The toe changed because your ride height has changed significantly, did you measure the ride height with the old shocks to see where it sat, so you could target that with the new shocks?