I recommend that you not buy the kit. For nearly the same price, you can get a better setup:
I would get a Joyetech eGo-C Twist 650mAh battery from
TVR.
In fact, I usually recommend that you get 2. But, since you're not a heavy smoker, you may want to just get one for now.
Next, you need the charger. Again, from
TVR.
Finally, I didn't like messing with cartridges. Even cartomizers are a little tricky. Due to all the quality control issues right now with Boge and Smoktech, I would recommend you just skip the cartomizer and go straight for a clearomizer.
I usually recommend the Vivi Nova Mini. I got mine at
AltSmoke. Again, since you're not a heavy smoker, I'd just suggest the mini for a lower profile. As for the heads, you'd do fine with either the 1.8 ohm or the 2.4 ohm.
Finally, you need some juice. Luckily, TVR gives you a free bottle with your first order. I've never tried their juices, but RY4 is typically a pretty safe bet. You can also see if they have a 555, if you don't like sweets.
Don't forget, that TVR currently has a coupon code: thankyou for 10% off your order (this is why I recommended them).
Total price is about $45.