ryan i use numpad 1235 and right shift and I have no keylocks at all, you could try since right shift is what makes it possible for you to avoid keylocks (shift tends to offer no keylock on KB's since it's assumed you're going to be using it as a combo with other keys, as opposed to space).
it takes very little go get used to, and right shift offers great tapping results in many keyboard
i aslo recommend to change numepad 0 to F8, this will make the setup much more effective but it will take a few games to get used to.
edit: if you're going to buy one search for microsoft internet keyboard pro, and if you can find it BUY IT. it's one of the easier to find PRO ROPING keyboards out there. No keylocks at all. The spacebar is crazy and you can reach max tap speed using any technique, thumb, fr, regular tapping...