If you are just after getting it low, cut the springs. Of course your ride will probably suffer. If you want to be lower than 4" in the front and you want to do it the correct way, buy 3" spindles.
5/7 drops are common on these, once you go past this, the ride deteriorates and you really need to rethink the end result.
I make my own front bag mounts, they are pretty simple and there is no cost, Of course you can get Ridetechs setup also. Of course I also make my own chopped crossmembers, or I use Porterbuilt setups now.
I think you need to lay out what wheels/tires you eventually plan to run and then work your way around the drop and what it takes to do so.