Thanks chaps - I suppose I'll make my mind up when I'm looking down the hill. My cop out route would be SE ridge which doesn't take me far off route. I like that route anyway.
I've looked at the looooong drop down from Pen yr Ole Wen to the bridge from surrounding hills and wondered what it's like to do. Not to mention the direct route it offers. But if it's too much downhill, too steep, it just does my knees in - end of walkies! If I do go for it I'll take my time.