Hi, I fixed the hear speaker without removing the battery or the rear facing camera (to retain the integrity of the copper strip) The camera just slides out of its housing when you lift out the motherboard. The other connectors just need folding back out of the way. Doing it minus all the other steps reduced the time significantly. I had everything pulled apart as necessary in about 5 minutes.
I fixed the speaker by pulling up the prongs that connect to the motherboard. My guess is that one of them was a little low, which affected the connection. Putting back together again was another 4 minutes or so, for a total of about 10 minutes. Hope that helps others avoid damaging the rear facing camera and bits under the battery.