[Dean]

But if he lowered the perches and now at droop there is a 4" gap. Filling that gap with a helper will raise the car again. They can't magically take up space during droop and not under load. They will take less space under load, but will likely still make the ride too high and he is almost out of perch lowering room. Even if they are 4:1 and only thus 1" tall compressed, ride height is still going to be 1" too high and he is about out of perch lowering room.

This sounds like too long of a strut for this spring and probably for this application unless you are willing to accept the higher ride height.