As others have said, the istick 30 really is the best choice. So much is relative in vaping, but I think this device is the surest safe bet for anyone at the moment. So boom, done. Nice.
On tanks, i would personally not get one just because it comes bundled for a discount. I know money matters, truly. But your tank is half the battle. You have your first half won, but now you gotta choose right. What tank are you currently using? Some of the ones you listed are sub-ohm tanks, and as hashtag said above will change how you currently vape if you aren't already do it. I personally don't care for it, but just note that your juice will likely have to be different to sub-ohm (usually lower nic level and higher VG) I feel like this is not warned enough around here. Short version- it's a whole different thing, and I would eliminate all subs if you're not currently doing it for now. You can always try it later.
I think it's safe to assume that you're using a standard Watt type of setup. If so, and since you're on a budget; I would highly recommend getting an Eleaf GS Air M (eleaf I think even says that it's made to pair with it) And it's only $9.95 at most places. I just got one for a friend who is trying to get into vaping. the coils are simple, and it's really user friendly....and of course highly affordable
I ordered his setup from sweet-vapes. Not always the cheapest, but usually really close in price to others and they are a reliable vendor. They also have everything you need in one place. You can get a 5 pack of the extra coils there too, as well as (and I highly recommend) get a silicone case for your istick 30 as well. It's less than 3 bucks and is like having a nice case for you cell phone.
Eleaf GS Air M - Eleaf Tanks - Eleaf - Clearomizers Tanks
PM me if you want more info, but in short, istick 30 + Eleaf GS Air M and you're golden. And okay, I'm bored. I just went and pulled up the receipt for my friend's order, this is the breakdown from sweetvapes. If this is in your budget you'll be set on hardware:
Eleaf iStick 30 Watt Full Kit
apv-i30w-all-apv-i30w-blk
$37.95
Color
1 x Black $37.95
apv-i30w-blk
Eleaf iStick 20W 30W Silicone Case
apv-i-sc-apv-i-sc-blk
$2.95
Color
1 x Black (By Eleaf) $2.95
apv-i-sc-blk
Eleaf GS Air M
sv-et-gsam
$9.95
Eleaf GS Air Coils
sv-jco-gsair
$9.50
Subtotal
$60.35
Shipping & Handling
$5.80
Grand Total (Excl.Tax)
$66.15
Tax
$0.00
Grand Total (Incl.Tax)
$66.15