I really like the looks of your truck especially as a bike hauler. I am very interested in what you do with the swingout as that seems like an excellent idea!
I have added lights to my tray hauler. I used a couple cheap trailer lights and wired up a plug. It seems to keep the idiots off my bike because at night it is more visible. I also painted it bright red at the same time.
Here is a picture of my hauler with the cheap trailer lights. I built the thing in a day so it isn't perfect but it has been across the US a few times already.