Yes I have the map and I remembered this morning about the route descriptions on it, I just had to unfold it one more section and there they were with the timings also!
We know the area very well as we have visited Sfakia about 15 times, always staying in Anopolis as part of the holiday. We know Kostas and all the family at Anopolis Rooms very well and we will be taking his advice on the local mountain weather forecast before committing to the hike to Omalos. A couple of the hotels in Omalos do drop off and pick up from Xiloskalo, which may be of use at the end of a long day.
I think its good to use this forum for advice and other peoples comments, no matter how experienced a hiker, so thanks very much for your interest and reply.