Hi Steve,
Snowshoes might help a little in the area above Lone Pine Lake but after that the trail is fine till you reach Trail Camp and then it's crampons that's required till the summit. I really don't think I would bother and save myself the weight.
I would definitely get an early start as possible. I was probably one of the latest going up the chute that day and I was there around 8.30. It gives you a little bit more leeway and for me it was really nice getting back to the car park before dark.
I really hope you have a great day Steve and make it to the top!
