Well, first of all you are going to be somewhat limited in the choices of juice delivery devices because you chose a mechanical mod over a regulated variable voltage mod. 1.5 ohm dual coils are about the hardest hitting factory made devices you're going to find. Also check out the Aspire Nautius clearomizer tanks and get the vertical coil replacements with ceramic wicks.
A regulated mod would have allowed you to change the voltage output of the battery for a harder hit at the press of a button. It would also have had built-in protection circuitry to keep you out of trouble should you get a short in your coil, or prevent the fire button auto-firing if you forget to lock it.
Mechanical mods can be dangerous for a new vaper as you're not yet aware of things that can over-tax your battery and cause it to vent. Mechanical mods don't have the processor on board which keep you out of trouble.
First things first. Get a different battery!! Trustfires, Ultrafires, & Surefires are bottom of the barrel ICR chemistry batteries, a chemistry which is considered to be obsolete for using in a mod. ICR batteries can vent flames and possibly explode in a mod.
Get an IMR chemistry battery. These are safe-chemistry, and high-drain batteries. An AW, Panasonic, or Efest 18650 IMR battery is what you should look for. You don't need a 30 amp battery yet like the green Sony's because you are far from ready from trying an RBA, let alone sub-ohm coils. Susan gave you the link to my battery blog; there's a large selection of IMR batteries there.
Mechanical Mod Proper Useage Guide
