1.5" Progressive AAL and Lifted Shackles?

Recently lifted my 03 double cab a week ago. I ran 5100s all four corners with eibach 620lb coils in front and wheelers 1.5" progressive AAL in the rear and kept the overload. I know new coils will usually setting but since i bought the coils used with 13k miles on them i dont believe they will settle any more. right now with a camper on my rear sits about 1/2" lower than my front. I am afraid once the rears settle it will have a noticeable bro lean.

So my question is, with the 5100s in the rear running the 1.5" progressive AAL and overload, is there still room for me to add a 1" lift shackle to ensure that I am leveled or have rake? I am fine with being leveled or rake but wouldnt want the bro lean. If i can just add the shackle withouth removing the overload this would prob be easiest.

The other option is to buy toytecs adjustable shackles and remove the overload all together.

 

Also, how will this affect rear travel? I know that I can probably remove the overload and add a 1 inch shackle since the 5100ss are up to 2.5 in of lift. but would I be able to just do it with the overload in?

 

So I can just add the shackles on the way it's sitting?

 

Great! Thanks! I'll let the rear settle in and then decide in which shackles to buy. But most likely I will be getting the adjustable ones. I read that shackles will increase wear on the leafs. Is this true?

 

Ok. Cause my leafs are straight right now and I don't want it to wear out faster. or do you think it would be better to just wait and purchase whole new leaf packs?