Hello. Not quite on point, but you might find this trip report interesting -- 3 women, all in our 40s, successful (overnight) summit hike on our first summit attempt. We did no where near the training you did (one of our number did no hike-specific training, though she was generally in good shape), but then again, we were overnighting, which is a different type of experience from a day hike.
http://www.whitneyzone.com/wz/ubbthreads.php/topics/7138/First_Summit_Labor_Day_9_6_201#Post7138The one thing I would add is, as you may surmise from the report, speed is not necessarily your friend when you are climbing to altitude. A slower pace may reduce your chances of suffering AMS (as will proper hydration as noted by others, perhaps together with judicious use of electrolyte supplements).
