I am impressed that you squeezed it into such a tight spot! I have had to change the bulb on my landing light, and getting at that mount when all the other behind-the-panel stuff is in place is its own special nightmare.
My transponder antenna is between the light and the front wheel. My radio antenna is mounted to the keel just in front of the empennage.
I found an old photo showing the inside of the installation (Things have changed a bit since then, but it shows the concept). There is a nice open flat area between the pitot tube and landing light.