Bike Rim Question

my $.02 FWIW:
I’m a clyde (250#ish) and have been cycling for a number of years on 20/24 paired spoke wheels w/ no issues.
Generally after the first few hundred miles, most machine built wheels need the spokes re-tensioned. Even though the wheel appears true, the spokes can be loose. Improper tension can cause spoke failure. I’m not saying this is the cause, just a probability.
With only one or two broken spokes on a 32 spoke wheel, you might be able to just replace the broken spokes and get it re-tensioned (assuming there is no other damage) -- $25 for my LBS to re-tension & true a wheel. Or as others have suggested, you can now justify getting a better quality wheelset for raceday.
I hope that helped.

I am the same weight as you, and had the same problems with my alex wheels.  I brroke rear spoke and the front never staayed reall true for long, though alway remained ridable.  I think it is a spoke quality/tention problem.  But I decides to go and get a set of hand built Velocty Deep-V rims with 32/28 high quality double butted spokes with the drive side spokes being thicker.  Never had a problem with them.   They never went untrue no matter how many bike swallowing potholes I hit.  But, after about 18 months I have worn out the braking surface (front).  Don't know if this amount of time is unusual.  I do ride in all weather, in all seasons, on alot of hills.  You won't find many wheels heaver than these on a road bike, but I'd rather not get caught out with broken spokes.  Besides I have race wheels for racing and the heaver training wheels only make you stronger.