32 or 36 spoke count wheels will work for you. I used to ride 32 spoke count (being very mindful to not go over bumps) at my 360 pounds. I upgraded to Rolf Prima "Vigor RS" (OEM) wheels which are 24 spoke front and back, but the spokes are indexed differently than a standard wheel. I put 1000 miles on the Rolf wheels before having to have them trued.
The upside to the Rolf wheels is their low weight and durability, the downside is the cost.