I think that atomizer should be fine, but I haven't used it - you might want to wait for someone else's opinion.
With the twist I would buy 2.0 or 2.5 ohms, the lower the ohms the lower the voltage you need to create more vapour, but it's also easier to have the voltage too high, so you get a nasty burnt taste. You get a wider range of voltages that will work with higher resistance. I personally stick with ~ 2.5 for everything to keep life simple.
I'm with you on keeping life simple. Now if someone could just tell me what kind of bridgeless atty to get, I would stop pulling my hair out. I'm hopeless...gah!