I'd love to come too but I have to move the MIL into the Old People's Home this weekend. I was up there a couple of weeks ago and the scenery is spectacular with views just as good as Blue Rag.
Make sure you walk out to The Sentinels but be prepared to wear your mountain goat boots, not a good walk for those with weak ankles ... or weak hearts
Driving wise the Mt Wellington track isn't much of a challenge, just a bit bumpy.