when the amps are left exposed as they are here you really can't hide those wires. i think it looks great, considering everything else looks nice and crisp. as far as the amp placement goes, i had mine on a board that looked like it was floating and that allowed me to hide the wires which was pretty cool, i also had some led's under the boards that lit up the whole trunk. only problem with that was that my 15" was making my boards rattle so much it actually made them unstable. how are you liking the sony speakers? i've never really been a sony man to be honest, always had alpine and MB quartz (the Q series is sick), but i have heard some good things from people that have used Sony.
Are those old school PPI amps or new ones? if they are the older model ones, they are worth some money man, i had a couple back in the day and they were worth every penny. i think they might have gotten bought our or something and they weren't quite there as far as quality was, at least comparatively. i really do like the cleanliness of the layout though man, great job. you know what they say, "cleanliness is next to Godliness"