Please develop the argument if you are going to run it. RVI's are fine if they make sense. Evidence is pretty good stuff to have, but those things call analytics are important too. Citations can be in any form you want, but if you want your speaker points to increase, then you should give a more complete citation. I will read evidence after the round if I feel it is crucial to make a competent decision.
Rapid rates are just fine.
I can handle any speed you have, but start out slower so I can get used to the pitch of your voice. If you break the sound barrier, then you are going too fast. Critiques are fine if you present the argument in an understandable manner. I suppose impact comparison in the last rebuttals might be nice.