Members with 20x8.5 and 20x10

[Low84]

Hello fellas,

I'm a big fan of this combo and want to do it on my truck but I'm in a dilemma.

The rims I want don't come in that size only x8 and by x9.5 so that's a half inch both for the front rims and the back rims. Would you guys go any narrower on the front, or would that half an inch make the world of difference?

2nd question would I be able to mount the same tire sizes of the traditional 8.5 and 10 width rims or have to get different sizes altogether?