“You are probably just on the edge of whether a road bike is a good idea or not. 24/32H wheels are probably fine, although I'd probably go with 32H front, 36H rear. But, those are probably fine. You can always upgrade later if necessary.”

I am 335 and this is my bike. The Giant should work great. I would avoid gravel and pot holes. No curb hopping or jumping. Keep the tires @ full PSI before every ride.