Should I prioritize intervals or goal pace runs?

Ideally, it would be both, but it is really an individualistic thing. I tend to lean towards intervals for the bulk of my quality but that is because I prefer to run at the faster end of training paces. That said, there is a definite benefit to goal pace runs and/or steady state segments within runs, and I am sure to include those as well.

While I do not think you can go wrong with either, I would recommend doing the one that appeals to you most. The thinking there is if you want to do it, you actually look forward to it and are inclined to do it again. And where speed work is concerned, repetition breeds improvement.