Well, my #350 springs arrived and, even installed full length, the lower control arm is still down lower than parallel with the ground. So, I obviously need a stiffer spring.
A stiffer spring will just make the situation worse, as they will push the lower control arm farther down. If anything, you need a shorter spring, or at least shorter when the chassis is sitting on the wheels. Or the upper spring seat needs to be higher. That's just from looking at your pics. I'm no suspension expert.
