It's mainly the optical drives and (soon to be removed) fan controller I have installed as I had to try and route a molex connection around back and up to the top 5.25" bay for the fan controller. Cable was just barely long enough and I had to try and push down the molex connectors in between the end one and the PSU to get the back panel to fit. No more fan controller will mean no more need for molex to be run up there, so that should help quite a bit by itself.5930K / X99-Deluxe is what I threw into mine. It was a pleasure to rebuild in after playing around with much smaller cases for a long time. You can likely still pickup a USB 3.0 I/O from Silverstone if you are interested. That's how I got it for my first FT02.
There are indentations on the inside of the case where thicker cables can be routed to alleviate routing from the back. Yes, they'll be visible especially if they aren't sleeved in black, but they make life much easier if you don't have cable clips specifically.(these style, for reference)
This little guy can also be incredibly useful if you have a bunch of 3.5" drives - http://www.silverstonetek.com/product.php?pid=304
If you have the earlier AP181's you can also route GPU cables along the edges of the fans and cable tie them to secure them in place.