Wheel and Tire fitment with bags question

[Slick67]

I am running 20X8.5 in front and 22X10 in back with either a 5 or 5.5 b/s on the rims (I will check tonight) will these tuck in front and back? I am retaining the front inner fenders and trying not to cut the bed if I don't have to.
Also, will a 2 or 3 inch c-notch let the diff hit the bottom of the bed, if so, will my "soon to be installed" air bags stop before it does? Running gear > 2.5 inch drop spindles and RE7s in front with cups and plates and RE7 in back on stock trailing arms. Here is a pic of the truck with the actual rims taped to a picture (old skool style not photoshop)

Is the pic close to accurate when airred out????