i too am not sure on the floorboards thing, but it sure is original, it'd have to be done just right i reckon. You'd have to do something about the walls in the boot aswell you wouldn't be able to just lay the floor and leave the stocky carpet going up the sides and back.
as for the neon it'll need to be pretty darn bright to shine out of the port (i've tried this
) when i done it my neons weren't all too bright but i thought of a little trick if i paint reflective paint on the inside of my box it'll act like a headlight yeah......................NO it didn't do shite and there was only a faint glow, and you had to look real hard to see it
if you are any good at photoshopping put in the floorboards and see what it looks like, if not post a few more pics of your boot from different angles and see if someone here will be kind enough to do some chopping for you, heck if they are good enough they can even put in neon glow for you