Josh Marshall points out that naming a doctrine after oneself isn't actually the done thing, but I think it would be also fitting to say that naming a short list of buzz words a "doctrine" is also going a bit far. Sarah Palin could fit it on her palm. Rick Perry could probably remember it all by himself.
What I think is interesting is that it actually is a way of putting the "three legs" of the "conservative stool" in one convenient place: 1) the defense hawks, 2) the deficit hawks, and 3) the values voters. Rubio's doctrine is simple: he's a conservative.