I don't know anything about sodium phosphate, so I won't comment.
On the other two things. Lots of people pull 11-12 hours days. Between my job and my farm I do 12-14 hour days in the spring/summer/fall. Winter is my "off season." It certainly isn't bad for you if your energy levels are what you say they are. Sounds like you're doing great, and all the moving is awesome for you. Don't worry about it. We can't all lay around and nap and play and "workout" when we want to like our dear Mark would want for us. As long as you're enjoying it, stick with it.
A word on meat. . . I have watched all the same vegan/veggie/raw documentaries. I actually used to buy into them. I was a vegetarian for two years. I ate veggies until they came out my nose... along with a LOT of pasta and potatoes trying to keep my energy up. Um, the two unhealthiest years of my life. I guess I can understand where they are coming from. Especially if all their studies are links to commerical meats. Um, hello? The grain stuffed meats? No, that's why PB suggests grass fed if you can get it. There really is a reason for that! Cattle aren't meant to eat grains. It changes the entire chemical make up of their meat. A cattle carcass fed grain it's whole life will be skinned out to reveal a 2-3 in layer of fat over the entire thing. A grass fed carcass won't have an entire layer of fat, and honestly won't have a lot of fat period. The grain is used to push them up to fat butcher weight faster. A grass fed steer takes TWO years to feed out. Grain filled steers take 18 months. Catching on? It's about money, it's cheaper and faster and more productive to feed out with grain. Plus, that means they get to keep all their land to GROW the grain and soy. Bleck.
My point is, those documentaries are great if you want to believe them, but in my opinion, the science is flawed because the meat they are using in the tests is tainted. I talk around in circles a lot, did I make any sense?
The process is simple: Free your mind, and your ass will follow.