Case mod for cable management

i am planning to modify my Antec 300 Illusion. im drilling various sized holes for better cable management. so i will be looking for some rubber edge trim to put around the edges that will be cut. any advice on where to purchase this at?

and i may want some kind of covering to wrap my wires.. if anyone could suggest where to get something like that..

any and all suggestions are welcome

i plan to paint the inside of the case black as well.. maybe take out the two led fans in front and make the back LED's white..

i may also try and add a window on the side door.

thoughts?