It depends on what you are going to do with it. You saw my truck and I had to do some cutting even with the 5.5" lift, but then I went with 10" rims.
I think if you do a lot of four wheeling you will still hit with the 33" tires. There are places that I even hit, but then I unhook my sway bar. If you plan on doing mind four wheeling I would think the 32's would work fine.
Good luck on your choice. I guess it's up to you what you really want. You can put 44's on a Explorer if you want, just depends on how much work you want to do to get them on.