2nd Gen suspension ?'s

I have a 2008 4x4 access cab TRD with 78k miles. My rear struts are shot and my rear springs are frowning. I have a an A.R.E. topper with the walk-through door and a Rackit lumber rack, which together weigh about 500lbs... I am looking at putting the Wheeler's 5 leaf HD pack (about 1.5" lift) with the Bilstein 5100s in the back and replacing the front shocks with the 5100's as well and setting them at 0. I don't want to lift my truck due to the hight of the parking garage at work, with the lumber rack I only have about 2-3" of clearance as it is.

My questions are;
A) has anyone used this same set up? How do you like it?
B) I was going to stay with the OEM coils up front, should I replace with the OME 883's (~1.25" lift)?