Hey Charles,
When we did Gorgonio, we did it in basically 3 speed groups. The fast group was up and down in about 8 hours or less. The moderate group was about 10 hours. And, our slow group took about 12 hours. Fourteen seems a bit long for me. I recommend if you do the day hike, start before sun up and wear a head lamp. I always prefer hiking in the dark during the morning time when I have fresh legs and a fresh mind. I haven’t done any over night hikes, so I have no advice for that.
Phil