I would throw in some large gauge needles for the syringes. Also, if money isn't too much of a problem, get some other flavorings that sound interesting to you as I have found that once you get started, you are going to want to experiment more and more. There is always time later to add more flavors, but, having done this for the last couple of years I find that the more you do it, the more you will experiment with new tastes. Don't mix up a lot of one flavor at first, your tastes will change over time and staying with one flavor for too long I've found that over time, you lose the ability to taste that one flavor if continuously vaped. I like to switch flavors every few days, if only for one tank or two then go back to my all day vape.
A word of warning on DIY juice. This can be every bit as addictive as the vaping itself. You will find that you are buying more and more DIY goodies as you go. Before long your friends will start calling you a mad scientist locked away in your secret lab. Oh, and they'll be the ones wanting to "test" your latest juices.