Wow, another long-distance hiker in planning on here, eh? Awesome. I am not doing any mailed food from home. There's a few spots where resupply is sketchy, and I'll just mail ahead when I find a good grocery store. Now, the PCT I hear is much different. You really need to plan a lot more than I have.
Have you seen this fella's PCT videos on youtube? He's a AT and PCT thru-hiker and a pretty good filmmaker IMO. http://www.youtube.com/watch?v=bkNdEZLzctA