As others have pointed out, R6 as a first bike is a NO NO. Even the FZR6 is a bit of a reach as the performance is only a VERY small step below the R.
Now, I LOVE my SV650; granted it's a 2000. The newer models are still as forgiving as the older ones. The V-twin will have all the get-up and go power you need along with a top-end that will keep you happy. Remember, it's not about speed; it's ALL about skill. I can keep up with novice liter bikes in the twisties. They can leave me on the straights, but I catch up quick.
I know several riders on Georgia Sportbikes that have the ZZR1000. A couple took the ZZR6 out for a spin and weren't impressed. NOTE that this was from veteran riders.
The decision is your own. Just take mine and everyone elses advice about getting GOOD gear and taking the MSF.
...and just to clarify... the first MSF course provides the bikes. The ERC ( experienced rider course ) is on your own bike.
--JamesT
