I got 2.5" of lift in the rear with the OME HD Coils. So maybe you could just get them and not have to worry about adding any extra isolators.
In the front, I also have OME HD Coils, but added a Rusty's strut plate and 1/4" clevis spacer. It sat a little higher in the front right after install, but my guess is it will settle to level over time. I added Al's A-Arms, so I don't know if this combo will result in UBJ contact with the stock arms.
The ride with the HD's is fine in my opinion. Not too rough at all.
You can read about my lift
HERE.