You basically started your mash at 165, purposely lowered it to 158, then lost 8 more degrees down to 150 by the end of the mash.
For future brews, it would really help if you wrapped the mash tun in an old blanket/sleeping bag, etc. during the mash. The more constant you can keep that temp, the better. Losing 8 degrees is a bit too much. Keep it within 2-3, and you've done a good job.
Primary #1 - Midnight Ryeder (Midnight Wheat and Rye)
Primary #2 - Florida Weiss
Primary #3 - Kane-DOH APA (Honey Citra APA)
Secondary #1 - Downtown Flanders Brown (brewed August 2012)
Keg #1 - Raspberry Florida Weiss
Keg #2 - Cinnamon Raisin Cider
Keg #3 - NONE!
Bottled - NONE!