Those look great, Craig. Given the unusual dimensions and weight of the 160, I'm thinking the best route may be to go with Axiom's official stand at a custom height of 5".
After searching for it, I see that the custom height option is cleverly hidden in plain site on the main product page for the stand.
Definitely the best approach. In fact, I need to get taller posts for my VP180. Thanks to you, now I know this option exists.