Does that mean that your turnframes will be set to 3 or 4, and the matchframes will be 100?
If yes, thats really impossible to call that a 'fast match'.
If you mean that the match will end up in 4 turns (which requires turnframes to be set to 25), then it is still not fast.
Regular joustingfixed matches sometimes may end up on a second turn and that's totally legal (otherwise why would this mod be put to the public servers list)
In any case, i am pretty sure you can have these mod settings.