So I realized the LDD file I found has a few errors, the wing cannons being one of them, so that's why they're backwards. I'm planning a complete rebuild for them anyway, I just haven't gotten that far yet.
Far as the studs go, I've flipped back and forth on this repeatedly. A lot of the upper surface of the nose is easy to replace with tiles, it's just that the panels on the sides begin to look bulky, and it changes the curvature.
At the moment, I'm still trying to solve the fuselage shape, and might wind up swapping out the slopes for leaning plates. That'll solve the ledge around the edge of the front panel more cleanly, but also means finding a new solution to all the curved bricks along the top edges of the stock hull. This might easily wind up being more of a complete rebuild than a mod by the time I'm done.