I hate to disagree (well, not really). Actually, it is more of a comment than a disagreement.
I don't see anywhere that you mentioned the type of riding you want to do.
If you want to just ride easy trails, bike paths and general road riding, then I wouldn't worry so much.
I am 6' and weigh between 220-230 (ok, I was up to 240 lbs a while back), and have used a standard $300 Specialized Hardrock (no suspension) for 4.5 years and 7,000+ miles.
Never touched a wheel, they are stock and 32 spoke. They are perfectlly true and work just great.
However, if you do plan on jumping around from rock to rock on your bike, than I would agree with the folks who have previously posted. As I recall, they are all pretty hard core technical types of mtn bikers.
So, take your choice, depending on what you want to do in riding.
Anyway, be sure to have fun.