F450 DRW- upsize tires and wheels but stock suspension preferred

[Bernmeister]

The wimpy skinny little tires and primer gray wheels on my F450 DRW 4x4 look terrible. I am spending tons of money on this truck and want some stout 35" x ? (as wide as possible) tires. I was thinking about a wider tire and rim on the front wheels and as big as possible on the back, but perhaps narrower to fit the dual rear wheel rims. Wider rims may be necessary and spacers for the rear wheels are possible. Any suggestions? A lift is not our of the question, but no more than a couple of inches. I need this truck to be functional too. Thanks