wheel size

Looking for tire size increase recommendation with above set up. Currently has 255/70R18. thanks in advance.

Preamble: I just purchased a '21 Gladiator Rubicon Diesel, my 1st Jeep and 1st time even looking at aftermarket wheels so virgin territory for me. I am stepping up to 35's, either the Falken Wildpeak MT or Nitto Ridge, and am trying to make decision on wheels, presuming my stock 7.5 width...