luckily I have the time, money, and luckily I'm still a young bugger that is otherwise unbreakable.
How many track days have you done?
Well... I started on Katana 600, probably in '02. Did maybe half a dozen. Things didn't click at first, then it got better. In the end of '03 I got a 'Busa, and then for a couple of years I was doing 5 - 6 track days a year, until a bad crash on '05 (tankslapper at 110 - bad for the bike, I walked). After that, it was just a few a year - like 3-4. This year, just one. Sort of lost a bit of confidence because go to the track so rarely for various reasons. It's like by the end of the track day, it feels good. Would be nice to do a few track days in a row - pound it into your brain. Instead, there is a relatively long period of no track days, and then it's the same story all over again.
I was riding in the medium group - I was probably one of the slowest anyway. But now, I am back in the beginner because I was too slow at the new to me track (Thunderbolt).
But there are plenty of guys who pick it up really quickly. Looks like you are one of them. But still, you need to get the feel for it, for being very close to others. In a race, there is a lot of trust between racers that you will stay on your line - that's why they can ride close to each other. If you are not used to it, and make a sudden change you can take someone out, not to mention going down yourself. That's why I'd say do a few track days with the org of your choice, and if they move you to the advanced group, you are good to go. Not to mention you will get a ton of guidance and info on racing from them.