So we went, we rode, we conquered 🙂
Just thought it would be useful to report back. We had a great ride following the Singletrack Magazine route above. The route was relatively easy to follow though a lot of crossing tracks to follow. Surfaces were generally pretty solid and rocky (a change from a lot of mid Wales routes and the nearby Doethie option) with a few splashy puddles and some monster ones that look deep enough to swallow you!
The route reminded me of the Dyfi Enduro in some ways easy ups on fireroads and then some more entertaining descents. A couple of the descents were on some very steep fresh forestry terrain one we rode twice as it was good fun and another had us gingerly walking down as have not done that much technical riding this year and it was properly steep and pretty high stakes! Suspect these were the sections that had previously been used in Enduro events.
Hopefully useful to know for others considering a ride there.