biggest cocern is the big IDE cables, folding them keeps everything neat and creates a path for air, thats where I would start.
cablegami owns, but can take some time to figure out if you have never done it before. Took me like 10 mins to route my IDE cable and Floppy, then I used a round cable for my top optical drives since the ribbon wouldn't reach.
as far as power wires try and use as few of lines as you need and keep the excess at the top of the case.
Heres mine after 20 mins of re-wiring:
Clicky Clicky
the P1 connector and the other 4 pin make it look messy from that angle b/c the fan on the door needs juice. But it leaves a nice path for air to go.