Well I've never been on a track with a bike but have in a car. The rule of thumb has always been hone the skills then go for more HP. As stated earlier the mistakes will only be amplified on a bigger bike. It's like a newbie starting on a liter bike. Yeah it can be done, but the consequences are much greater than learing on a 500. Since you aren't concerned about the cash, pick up a 600 already set up for the track.
The season is over you should be able to find something out there.
If it doesn't suit you you can always upgrade later.
As for the ice skate theory I think that will be the case with street/track acalmation as well.
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