I would suggest spending about $52 on this Vamo setup, which includes a pair of good Panasonic hybrid batteries and a high quality Nitecore charger.
$51.42 Vamo-Vivi Voltage Adjustable E-Cigarette Battery Compartment Set - with Nitecore I2 US battery charger/charger cable/2*Panasonic 18650 batteries at FastTech - Worldwide Free Shipping
Next, you could add a Kamry K100 to go with your new setup for $24.60- $24.60 Empire KeCig K100 Mechanical Rechargeable Electronic Cigarettes - blue / no battery at FastTech - Worldwide Free Shipping
The remaining $43.40 could get you more batteries and a couple new delivery devices. You might want to get some 18350 batteries as well to use the Vamo and K100 in it's shorter 18350 mode. Good luck with your new setup!
I would/am going with this same deal but instead of the K100 I am buying the Sigelei #8 deal over a aquavapors.com. Its about the same price but you get juice and IMO a better Mech Mod.