#1 on my thoughts will be your pinion angles. Your rear axle will have to be adjustable to achieve the optimum DS angle. My experience is that you can’t do much with front DS angle and a DC DS won‘t help much!
I don’t know the answer but it may not be recommended?
Who’s plates did you use? I first used Dobinsons with my big lift and it didn’t help at all!
If your not using the @landtank plates already, give him a shout.
Maybe Delta arms are in your future?