Dave,
I used to carry three different boxes to the field every time I went flying. As was said above, "everyone else will use these tools more than you will" , and this is true. It sounds like you have the nessary basics so I would go with what you have for now. Everyone has a different idea of what you need at the field, this is something you will come to your own ideas on as you gain experience. Different types, styles and sizes of models have their own needs as far as field equipment goes. Personally, I carry only the basics in a small compact box. It has a field charger, glo charger, ESV, 1/2 gal fuel, 12v battery, 12v fuel pump, 12v starter and enough tools and hardware to make minor repairs. And the whole package weighs 12 pounds

This works for me, but like I said, give it some time, look at other flyers boxes and then decide what will work for you. Good Luck, Greg