What you're proposing won't give you much different results that just creating a split line on your actual top plate. The soft intermediate part does nothing except mess up your plots' scaling factor. It's not a bad idea to be conservative and apply a two point load. But if you're looking for accuracy, perhaps you can use a load distribution curve that look something like the bottom of a circle (heavier on the sides, lower in the middle)?
Sure, the model may deform some amount and turn the two distributed loads into point loads. If this is a concern for your design then you might be best served by modeling up the actual block (actual dimensions with actual material properties) you intend on placing atop the design and place it atop this model. In that way even as the mode deforms your model and changes the way it is contacting you will see that change in action.
Thank you for your help guys. I really like the idea of using load distribution curve.