Done it lots of times Dan, you'll be fine its a good track. I'd do it in a stock vehilce any day of the week, more so if you are following an experienced driver.
Agree with Alex's comments Dan. Is a nice track with a couple of steepish sections, so a 4wd with decent rubber and the driver has a bit of experience should not have any issues, unless of course it is wet.
In regards to the track condition, cannot comment what it is like now, but a group of us from the site will be driving it next week after all the cup weekend crowds have gone home, so can give you a report then if you like.