We drove the CREB track last year about two hours after the MYSWAG crew went through. Fantastic drive, one of my favorite tracks in Aus. so far. We copped a heavy shower about a third of the way in which had me abit worried and made a few down hills "interesting" but thankfully when we reached the steepest parts the rain had cleared/hadnt made it to these parts.
One particular climb just seems to get steeper and steeper the further you go but we done it easily with no damage to anything. We towed our Tambo Cooper trailer, we had Wrangler MTR tyres, 3" lift and a front diff lock which we didnt use(but finger hoovered over button ready).
If you have the chance to do it, DO IT. And to tell the truth, we didnt find the trailer a hinderance at all. All this would change in the wet though.