I would do what JVT did. Pick up a used 500cc "Sporty" bike and learn on that. Use if for a year or so and then decide what you want to do from there....You might not even want to ride, who knows?
Then, after deciding you can sell the 500 to another newbie and get what you want. The SV650 (especially the 'S') is a nice bike, but I believe it can be quickly out-grown. It will also suck the first time you drop/crash that brand-new bike...because it is not a matter of if, but a matter of when.
Other good things about a used bike, low insurance with just minimum coverage. If you crash it, fix it yourself. The last thing you want to do is to report a crash to the Insurance company (hello high premiums!).
Some good starter bikes:
Kawasaki EX500 (Ninja 500)
Ninja 250
late 80's Honda CB-1 (Rare 400cc, looks like new 919)
Honda Hawk GT-650 (Very big cult following, SV-650 is a take off of this bike)
Suzuki GS500E
Anyhow, it is your choice....good luck
