BB,
I don't know how wild or mild, but staying with the Crane solid roller. We are just trying to build more torque, starting 3500 / 4000 rpm vs 4500 / 5000, and make the car quicker. It will be interesting to see how this new cam behaves in relation to top end pull.
I don't know anything about the Rhoads variable duration lifters. It would not be my approach but sounds like they work well for the folks who use them. Looks like they make a solid product.
http://www.rhoadslifters.com/Pages/index.html
Let us know how they workout.
Talk soon, John