It might be worth having a different mix for take off. In the Hawk you only use the brake on take-off if you really have to. The idea is to line up properly and then if you find yourself going off line during take off you use (up to) full rudder and hold it. If that isn't enough then you use the smallest dab of brake possible to bring the aircraft into line. After a little bit of airspeed has built up (way before rotate speed) you don't need to touch the brakes any more. As you say, a lock up here would be nasty.