New Balance are an excellent choice.
In regards to training/running, try and have 2 rest days a week. I understand if you have an event coming up you not want too, but on the rest days you don't have to just do nothing. Just something different to running. Swimming, cycling, martial arts class, whatever. Just something to give your body a change and work/rest different muscles. Three days running, rest day, 2 days running, rest day - For instance. Or just find something that works for you. Your body is your best measure, if you feel like shit, don't train. You can generally tell when it's just muscular pain (normal for training) or actual joint pain/damage that can be detrimental to you training.
Don't neglect stretching either, especially afterwards. And I assume you know how to hold your core when running. Specifically
Transversus Abdominis.