I don't think you're making a wise choice by substituting hamburger meat for chicken, nor can I recommend you buying bone meal at a gardening store.
The diet in my book is what I recommend. If you want to make up your own diet, then the research is on you, but if you want me to recommend something then it has to be close to a complete diet. I don't honestly think your given diet is complete enough as it is, and if you reduce the quality further by subbing hamburger meat for chicken, you will be diminishing it further, rather than enhancing it.
If you would like to see a good "spin" on my diet, QCK23 posted his version of my diet, which I think is excellent.
Jack