You can get a fairly decent "cloud" set-up pretty cheap these days. I would suggest looking into the 40 watt eLeaf iStick or the Innokin Cool Fire IV, paired with a sub-ohm tank of your choice. I prefer the Atlantis v1 and the FreeMax Starre (I prefer the .5 ohm coils).
The 40 watt iStick comes with temperature control, but honestly, unless it's something you're truly interested in, simply ignore that feature. It has a longer battery life than the Cool Fire IV. Both are forty watt devices. The iStick can read resistances as low as .15 ohms. The Cool Fire IV can read down to .2 ohms. While the Cool Fire IV only has a 2000 mAh battery life, it is a functional pass-through, which means you can plug it into the charging cable and continue to use it after it's died.
As far as the juice part of "more vapor" goes, most people who are into sub-ohm set-ups prefer juice that is either high or max in VG; VG stands for vegetable glycerin and it is what provides the bulk of the vapor. If you do choose a sub-ohm set-up, I would suggest bumping your nicotine level down to at least a 6 mg (if you haven't already). Most people use 3 mg, but I do enjoy a nice throat hit, so I use 6 mg. I advise against using anything 12 mg or higher, as you could easily over-nic yourself.
A set-up like this can be purchased online for around $60.
Good luck, and happy vaping.