No pun intended. I use tiresize.com to make comparisons. 33/12.5 are like a 1.3" wider than 285/70. all manufacturers take measurements different, so it could be slightly more or less. E load tires are too stiff for daily driving. that's my two cents.
Keep your tire size to no more than 33. That sizes you mentioned are 34.4" tires and will not fit with that setup. I'm running 265/70R18 (32.6") with the Bilstein 5100s and Dobinsons progressive springs mentioned and I got only a hair of clearance from everything. Unless you want to pull the...