Smoking and vaping are two different things. One will never be just like the other. With that said, there are a few things that you can do to get closer to the analog experience.
1) The most obvious... Choose a tobacco flavored e liquid.
2) Start with a stronger nicotine concentration.
3) Use a "low res" atomizer or cartomizer to produce more vapor at a given voltage.
4) Try a higher voltage battery mod.
I don't know anything about the cig-rx, so I can't comment on that or how it would interact w your vaping experience.
HTH,
Jason