2 Ut60 240mm rads? Thats essentially a 60m thick 480mm long rad... Only thing it can't cool is a heavily OC'd CPU and 3 GPUs.. on 5/7v fan speeds at least.
One thing to note when you are building it, make sure you leave a little extra tube so that you can fill the bay res. Unless you mod a fillport into the top of your case.
Have you thought of using hard tube? Its surprisingly easy to do, its pretty cheap and the aesthetics are 10x better.