Looks good dude!
Since you're just bashing, it's probably not worth updating the rear suspension unless your track is going to have boards around it. If you break something then maybe it would be worthwhile to replace it.
I can't see that you'd need too much more as it has most of the good hopups (The fix in the front, alloy drive cup, CF radio tray etc). Maybe the only other thing you might consider is using a CF side brace to help protect the tank from the pipe if you get t-boned.
As for setup on rubber, start with the kit setup (you can download it from the AE website). As for the blade sway bar, have a look at the options pages on the website and you'll see what it looks like. Might be worthwhile.
Cheers,
Mike.