I would not recommend sticking the belltech shock relocation brackets between the DJM trailering arm relocator bracket.
You will need DJM or mcgaughys style shock relocation brackets if you dont plan to get the proper length drop shocks.
Also, when installing the djm endlink kit, it is best to install the swaybar links with the truck on the ground, at right height. Problem is when the axle is off the ground, it pushes to the right about 1" or more. At right height, or on the ground per say the axle will be further to the left, therefore allowing you to bolt up the endlinks properly.
be sure on the left side swaybar frame bracket, you have moved it over, and drilled 1 new hole, this allows the swaybar to properly be installed.
Hope this helps.