I think making your own plan is a terrific idea. It's then one you can own and change as needed. I write down my food plan at night for the next day -- that way I can take into account things like "oh, I'll probably be invited to go out to pizza tomorrow." I can decide whether I'm going to say 'yes' or 'no' to that and decide whether I can handle one piece or two and, gee, maybe one piece and a big salad would be perfect. Going in with that already in my head makes it much easier!
My plan, now, is based on tons of experience of trying different things. Since I prefer omnivore plans, I started with the information at the USDA. They even have some cool tools for planning: http://www.choosemyplate.gov/
Lots of folks have good luck with calorie counting and getting calorie counts in your head is a pretty good life skill so you might want to try that for awhile just for the experience. There are all kinds of tools for finding the calories in foods online or on your phone or in a booklet.
You might find it useful to use something like SparkPeople (http://www.sparkpeople.com/
) or LiveStrong (http://www.livestrong.com/
) where you can type in what you ate (or what you plan to eat tomorrow) and see how it stacks up for calories and nutrition.