I don't remember ever seeing an un-carved Dickert. That being said, I'm sure there's an un-carved one out there someplace, but at the time that Dickert worked, a rifle with some carving was pretty much the norm. Un-carved Dickert & Gill rifles are known. His Military rifles have no resemblance to his regular rifle, so don't know the point of mentioning that.
But, since you already have the pre-carve, you could always buy a smaller caliber barrel, but with added weight. If you made it with no patchbox and iron furniture, no one would recognize it as a Dickert anyway.
As you mention, maybe just selling this one and starting with a small cal southern would be a better idea. Long and slender, light, no recoil, and plenty accurate,,, what's not to like!
John