This wasn't about what I hoped it was about, but I'll change course and help out anyway. I have a friend who is exactly those dimensions (if not heavier), and he is very comfortable in a Cessna 210.
Judy
P.S. To save you from having to ask, from the thread title, I was prepared to laud someone for worrying about weight and balance because he is heavy. I have flown a lot of different C182s in my flying career, so I have a pretty good sense of the weight and balance characteristics of that model. I know C182 drivers who I am almost positive throw the airplane into nose-heavy condition every time they fly alone, and possibly into an overweight condition when they fly with some of their family. I have bitten my tongue raw trying not to remind them to check weight and balance. I really wonder how many people go with the 170 lb "average" when, between them and their pax, they clearly do not come even close to that.
Why do I bite my tongue? Because if I do say something, I'm likely to lose my head, either by having it bitten off by someone in a defensive mood or having it hit a brick wall of denial.