2006 Chevy 2500HD 4x4 backspacing
 

I am looking to get the Ultra Phantom wheels for my 2500HD 4X4. I am running 285/75/16s on it. The wheels are 16x8 and they come in 4.88 backspacing with 10mm offset or 4.29 backspacing with -6mm offset. I would like the tires to be flush with fender flares but I do not want them to stick out.
Which ones would be best.