I use 3S 1800 lipos with the 6000KV setup (The long thin ones for the Tex helis I think are what the advertise them for), they work nice. I actually ran 4S and the 4800KV motor in my T45 but the 3S 6000 is essentially the same power. Here is my T45 build thread:
Not sure on the Hobbyking ESC, it just needs to be able to run a 6 pole motor at least 70,000 rpm so look at the ESC manual and see if they specify rpm limits, and timing needs to be low around 5 degrees. This is why I sell the ESCs I do on my website, they are 100% compatible with my motors in this regard.