that looks like a 4.5" rough country lift w/ add a leafs... but maybe it is full packs, however my rear springs were flattened, a friend of mine had a set of 3.5 packs that had the main leaf bent, just by adding the bottom leafs mine sat up the way it did when the lift was first put on (rear a lil higher)
for your condition i would add a full length add-a from anything with decent arc. temporary until you get everything else set up to go bigger