That looks like 5" in the front and 7" in the rear.
I would suggest 2.5" drop spindles and 2.5" drop springs in the front
Flip kit and 2" drop shackles in the rear will give you 7"
Just looking at the offset on your wheels They are most likely not going to work with that much drop. You will also have to go with a lower profile tire.
If you do some searching around you can see what different people did.
Here is mine lowered 5/7 with 15" wheels
By
claypool782 at 2011-08-04