It seems like you have already ordered your bike.
For other heavy people getting bikes, consider a fat bike. The tyres spread the weight out, so you are less likely to break spokes or wheels.
Also get a large seat. It will be much more comfortable.
Are you the one who has been spreading this misinformation? Broken spokes are caused by an improperly tensioned wheel, and almost always happen at the hub, which does not care what is happening on the other end of the spokes. Perhaps the rims are more safe from being dented or otherwise damaged, but the stress cycles that the spokes see at the hub are identical to any other bike.