Yeah, IFS are pretty crap on highly undulating terrain, lifting wheels whith no lockers isn't great.
Mark,
You will be fine mate. You will love it. No cowboy stuff and ifs works fine up there. My comments were just as i see tracks in comparison to past tracks I have done. So as mentioned by others, we all rate things differently. Bottom line is though mate, you will easily get there and back, it's just one of those amazing tracks that has alot of surprises from day to day.
I didn't mean to put anyone off. I loved it heaps.