I maxed out at around 270 and was riding 23s at the time with no issues. Most of the wheels I’ve ridden were factory made and get out of true easily. Get good wheels or learn to deal with speed wobbles, I’ve never crashed from a speed wobble and most cruddy back wheels seem to have several spokes that lose tension, and the wheel will be out of true but not “dangerous” in that it shouldn’t hamper your handling significantly and won’t fail suddenly.
also there are bigger boys than you riding little race bikes with thin tires, don’t let people tell you you’re too fat for a drop bar road bike. Also you want higher psi in tires, the thin guys will think the pressures you have to run are crazy