Geometry and spoke count are the primary determinents of stiffness, followed by rim choice and lacing. Spoke model actually has very little effect. Whoever told you that was wrong.
That said, I would still go with Bob's suggestion. Or maybe on the rear use Race DS and Lasers NDS because that actually helps with tension balance.
But also, even at your weight the Stan's is a pretty flimsy rim. If you really want a stiff and durable wheel I would choose a beefier rim.