flipped balljoints

whats the most i can shim up the lower balljoint when its flipped to give me more drop?

I have heard 1" but you don't really need it unless you are not planning on bagging you can lay frame on 17" without spindles

i ran 2" spacers for a long ass time on my old mazda it sat about 1/2 inch off the ground got lowest non adjustable and a couple of to low tickets and i got high centered a few times id just bag it