I have varied between 220 and 245 the past 5 years, and all that time I have ridden a stock Lemond Buenos Aires with standard Mavic 32 spoke wheels (6,500 miles) and a standard Specialized Rigid Hardrock with standard 36 spoke wheels (8,000 miles) and I have never broken a spoke nor had a wheel come out of true.
I think we make entirely too much of a biker's weight. Ride and enjoy.