First time with blender; it's starting to look pretty good!
I noticed that when trying to create quads for the tip to avoid the tri-distortion, it's going to be impossible while still maintaining the 1/4 mirroring due to the number of edge loops available. So you can kind of see in the image I uploaded that I didn't completely close the tip. Eventually after I'm done modifying the nosecone holes and finally apply the mirror, I'll select the tip edges, extrude, and merge to the center. Then I'll select the resulting tri-faces and convert to quads. Leaves a buttery smooth tip! :D