wheel tire combo 16x8s front 16x10s back

[KattysFine69]

hi i have a 2003 gmc sierra 2wd reg cab long box
i would like to put these rims on my truck or something similar
16x8s front 4.25" backspacing
16x10s back 4" backspacing
i want to be different and put something like these on because i do not like big 20 inch rims or bigger on trucks i like the old school fat tire look want to try it on a newish 2wd truck
it is also stock height no drop at all
how much backspacing am i allowed before anything starts to rub or cause problems? and what would i have to do to fix any issues concerning this combo?
and also what kind and proper size of tires should i go with as well? thnx :P
http://www.procompusa.com/productlis...lter_qualifier