Your welcome.
No, I'm not replacing the standard compression post for a built up beam of some sort. On the commander, it is my belief that the compression post is the best way to go. If one were to say, want to remove it and do something like the Ariels set up, it would take major interior redesign and careful calculations to address the tremendous loads that the compression post carries, then where to fit everything in such a small cabin layout.
For an idea take a look at the Kittiwake's interior configuration, which is another Carl Alberg design. The cabin interior is small and there are what amounts to two load bearning posts on each side of the centerline cabin sole.

Thanks.