I have the same question as Walter - do you have any experience at all?
If you have teachers ready and you'll be learning on a lake then you should be ok. I would advise satying away from jibs - you do not know how to sail the boat and making it go faster is going to make you're learning experience harder and more dangerous. Figure out what you are doing first, then look at buying things. In a Hunter you'll average about 4 knots without a jib on a nice day - plenty fast enough to learn. With jib you can go to 8 knots, depending on the lake (not familiar with SC lake winds) - bigger the lake, bigger the wind, etc. I've never sailed a Hunter so I'm not sure what kind of drag she has or what her steering performance is like - all things you'll need to test out before throwing a jib on her.
Also, do you already have a slip for it? Being a keel boat, you really should.
As far as right now - do you know all of the parts of your boat - their names and functions? If you do, great! If not, get you book and go sit on the boat for a couple of hours for a few days. Learn them all and test yourself. There's nothing more dangerous or foolish than a boat owner saying "Hand me that rope over there".
What kind of shape is the boat in? Does it need any fiberglass work? How about the teak? Make sure you maintain every detail - it doesn't take much for a boat to lose it's luster and seaworthiness.
Resist the urge to run her under power. It's a bad habit and should only be used in poor wind conditions and at the dock - more power = less sailing = why own a sailboat.
And if you're concerned about sailors superstitions, just let me know, because there's a ton of them.