A night on top of Mt Taranaki? Alternatives?

Hi all, has anyone done that? What are your experiences? What would you recommend for this? Where exactly would you camp? Also, are there any remotely comparable trips on the South Island - high altitude with not much harder or more technical climbing than Mt Taranaki? Would appreciate any pointers, whether you have been there or not - anything you can contribute much appreciated. I simply want to have more time on the mountain to enjoy the phenomenal views. It might even be easier this way because we would have twice as many daylight hours available as if doing it in a single day, and one night's rest between ascent and descent. I have been up the mountain once before, so I know what to expect. Then, I was about as fit as I am now, but much, much less experienced in tramping. I have also successfully slept under the stars in up to minus 10 degrees celsius at low winds on the snow at 1200 metres altitude, but I am aware that at 2500 metres, depending on weather, it could be a very different game. What is the typical range of the night temperatures during summer at the peak of Taranaki? I'm thinking: In summer, only with excellent and very up to date weather forecast, strong tent in case of getting caught in high winds contrary to forecast, extra warm clothing, plus all the usual gear for serious trips, including a beacon. Very undecided between two options: A) Camp in a relatively sheltered spot one to two hours away from the peak, ascend peak in early morning without most of the gear, then pack up camp on the way down. B) Camp in the crater on the ice / snow. Just one of those things that are coming up in my head again and again, until one day they drive me nuts and I just have to do it to get rid of the idea :-) Cheers, Matt