My .02..
If I were you I would rock an older 600-750 until you are out growing it. If you do it right you could own 3-5 of those bikes to one Ducati. Track get off's happen...it's just a tough fact of life. The best thing that can happen to your track riding comes from being comfortable on a machine, not just physically, but in a place where if you toss it down the track you won't have a mental break down in the paddock. Get something you can afford to ride, crash, fix, improve, repeat...because that is reality of many track day folks.