Although there are minor differences in configuration among cave divers,
THIS article is a good place to start getting a basic idea of a commonly used configuration. As stated above, the blackplate and wing, long hose/bungied backup setup is widely used.
I would suggest, whether you intend to pursue the DIR approach to cave diving or not, that you find the closest GUE Fundamentals class to you and take it. It will be a solid introduction to the gear configuration, the basic skills (eg. S and valve drills), the non-silting kicks, and a high standard of buoyancy control. You will need all those things for cave diving, and you may as well spend time perfecting them at home, in open water, before you spend the money on a cave class.
At least that's what I've done, and I think it's been a good strategy. I took Fundies two years ago and I have transitioned to doubles and worked towards a tech pass. I did cavern tours in Mexico in March, to make sure I really liked the cave environment. I'm taking NACD cavern next month, and GUE Cave 1 in April.
There is no hurry. The caves will be there. What you want is to develop the skills that will allow you to make the best use of your cave class, and allow you to reach a level where you can go on to enjoyable, safe cave diving.
Welcome to the ranks of the addicted and obsessed
