You won't find any nav lights that are visible during the day. At best you may find a scale strobe that can be seen. Two different types of light and nav lights are not to be seen during bright light only low or no light times. As far as the 120 on.....Way over kill. You will have a serious problem trying to balance the plane and the weight you add to balance will increase the wing loading to a point that the plane will not fly as it is intended and from the sounds of it you are not an experianced pilot your chances of a sucessful flight are slim.

I have the very same plane and it is impressive. The weight and wingloading are scale and comfortable but if you hang that much weight on the plane you will ruin it. You don't know what your talking about. I fly in winds up to 20mph with power plants suited to the plane.

You guys that think you have to put 100hp up front do not under stand the concept of power to weight ratio. If you put this 120 on it you will have to add enough balance weight that you negate the benifit ofthe increase in power. If you want a larger 4 stroke then put a Saito .82 on it. Not much heavier than the average .46 2 stroke that the plane is designed for.