I applied! I have alright GREs (1350, 760 math, 5.5 analytical), a strong GPA (3.88 at time of application), really strong recommendations, and a pretty strong statement and proposal. I spent forever talking about the broader impacts and scientific merit in all my sections, and may have written two or three drafts before submission. I don't know that I've got a stronger application compared to anyone else, especially since I'm still in undergrad, but I do think I wrote some pretty coherent material.
We'll see how it goes. I'm pretty nervous about the whole ordeal. Coming into this straight out of undergrad seems to always give me this inferiority complex.