Rear AAL with TSB Springs - Which to get and how much lift plus install question

OK I know this has probably been posted a million times before but I will be getting new 5100s and coils up front and an AAL in the rear, ordering from headstrong so I am not sure what AAL to get, the Deaver Single Leaf or the Headstrong 3 leaf progressive AAL.

I will be installing a new rear bumper first to see how the rear sits before deciding on 2" or 2.5" up front, I don't mind a little rake but want to get the most lift in the back since I have a little sag with the TSB springs, I was initially thinking the Deavers to save some money but might go with the progressive.

Also, any input on which would be easier to install?

 

Anyone have any info on the install, the thread posted here makes it seem pretty simple just wanted to confirm there wasn't much of a difference with a progressive AAL.

 

Hello I have a 2012 dc lb and got 1.75" out of the Deaver aal and also got some vibrations from the lift so be prepared for that install is simple enough