I ordered the shackle kit for the sense of ease.
I want to keep the brand new stock Bilsteins, I really like the AAL though, I think the shackles will actually make you a tad higher in the front. If you can run stock shocks with no brake line extensions it would be a no brainer to go AAL.
Also the cost of either isn't bad so it would be an easy change (or addition if it's possible!)
Spacers/coils up front & AAL/Shackles in back = one nice cheap lift!