My cham has made his way none to nose to his uv light its a new viv i had flat packed an built yesterday a few things on it i dont agree with though i.e the wites to the uv bulb going from back to front il upload pic of my cham so close.
I think your bulb is in a good position where it is.....but you could put it to the back if you don't like the wires. My uvb tubes for chams are in the middle (at the top)....and the chams do like to tightrope walk on the wires