Welcome to the forum.
By all means look around at gear online, but I suggest you contact/meet up with local cavers first. Find out what they use and recommend before spending your hard-earned money on something you might not want or need. Many cavers also have spare items they are willing to loan out to beginners for trips.
You have a few local pointers already, but if you need more we also have a nifty page which lets you find websites and contact details of grottos in your area
hereGood luck!