In reply to daniele1272:
Hi Daniele
Yes the ridge is a good one to do, I started from Aberllefenni when I did it and make your way up through the forest to Waun-oer, a good idea to also do Cribin Fawr, Craig Portas and Maesglase and return to Craig Portas then pick up Mynydd Dolgoed back to Aberllefenni.
Its a good day out in the hills with around 3500ft of ascent.
Jase