Not familiar with Norwood CSM.
Regarding your doubts: Not that you will have this use, but, when we were into the "diving for $$" logging deal, I knew 2 different loggers that were sawing 36" + table slabs out of the larger diameter logs. If they can see a benefit, I don't see any reason you can't be satisfied with one. For logs under 12" diameter, You will have 30% of waste from sawdust and slabs. Chainsaw mills take a ¼" cut, nearly.
There are easy ways to build one, if you are so inclined.
Have you seen a Ripsaw advertisement ? Check them out. It uses your chainsaw head. You might build one of those by modifying the design ?
The Aluminum tracks are a pricey part of these mills. Down here, the track system is made from wood. Very easy to do. I might could even take a couple of photos, IF my neighbors haven't moved out yet.
No matter what, go for it.