Looks tight but very neat & efficient. I have my fuel tank in exactly the same spot, right on CG which works well, I mounted a small HS81 mini servo for throttle under the nose of the plane,( the sloped part), the push rod is only about 4 ", just one or 2 bends to clear engine/muffler. I have been mounting the wing saddle tape on the wing rather than the saddle area, it seems to stay on forever this way, I do have to cut covering from the wing but its easy with a soldering iron. Enjoy the Do, report back on the maiden.