To me the bike should be ready to roll before you go to bed and I think you need to allow time for dealing with any flat that may occur during your commute.

You probably don't need to get up any earlier, just make sure your bike is ready to go the night before. It's highly unlikely that something is going to break while it's just sitting there.

Does it really take an hour to shave, shower, and dress? That process probably takes me 30 minutes. Unless I'm dawdling I'm on the road about an hour after I get up and that includes getting breakfast ready for the kids and packing a lunch for myself.