Racecraft Drop spindles, What springs do I need to use?

Sup fellas

I am changing my suspension so it does not bump-steer or/and correct the geometry, If i use the Racecraft drop spindles to lower the car what springs do i need to use?

I know i can't use the lowering springs i currently have because it will be lowered like 5 inches with drop spindles, What is my option here?

OR is this even good idea? haha

Let me know

Thanks fellas