Goofygirl,
Firstly a Kanger T is a clearomizer tank delivery system.
Kanger T2 EgO Clearomizer Tank System
There are many different names for this type of product like Visions, eGo, Stardust but they are basically the same concept.
Also, Juice generally lasts about 2 years given that it is stored out of light and heat. Just like with olive oil.
I would like to say right here that buying a high-end device like a Provari will NOT make the transition any easier. Only from a psychological stand point. Yes, they are a great product and very well made.
The eGo twist is all you need to restart your venture. It allows VV (variable Voltage) up to 4.8V. There are dozens of clones out there and the original is made by Joyetech. The Visions Spinner is made by Visions in China and is perhaps one of the better incarnations when it comes to batteries.
Most vapers end up buying at least 1 PV(Personal Vaporizer/ecig) in their first year and I guarantee MOST have an eGo at least as a backup for their mods.
What IS important and WILL be the significant contributor to staying off cigarettes is a balance of delivery system and e liquid. Given that your battery (the main component of a PV itself) is a decent one producing sufficient performance to suit your style of vaping which only time will show.
So, get an eGo twist or Spinner and start trying out Cartomizers, Clearomizers and Tanks.
No one can tell you that this particular product is going to work because he or she is not you.
Dripping is considered to be the method of choice for many veteran vapers but like me you may find this to be a pain.
Cartos like the Boge are only $7 approx for a 5 pack and each one should last two days or so depending on how often and what liquid you use. Naturally they can be cleaned but after about 3 cleanings they are dead. Thicker VG liquids are not really suitable (anything over say 75%) for cartos but you can try adding a bit of distilled water, say 2 drops per 3 mls or so to help thin it out. No more.
The Bauway Clearomizers are good all round performers so you could try one of those also.
They are better performers than the Visions I feel.
Bauway Clearomizer CE4+ (ver2)
I could go on but let me know if you want any additional info.
You can PM me and if I don't know I will find out for you. I'm still a bit of a noob too really