i really think you need to re-read the info that's being posted on this thread. there's some good stuff people have posted. Honestly, though, you should do your own research. Look through some of the thread on the shrimp sub forum. I think this is why you are getting a few curt responses.
CRS/CBS are MUCH harder to keep than neos. Even I know this, and I'm far from an expert on shrimp. If I were you, I'd try other neos. Rilis, blues, oranges etc. come to mind. They are more of a step up from RCS and yet will be far more economical to breed and sell. You can get about 2-4$ for them if you know how to sell your product. If this is going to be a money making endeavor, I'm going to repeat what people have said before: the 5.5g is not enough. I think I've spent more time, research, and money on my 20g CBS tank than any of my other tanks individually and I still feel hesitant to put shrimp in there.
I read through the whole thread, and maybe I missed it, but if you haven't already, think about these questions.
How will you lower pH? Moon sand is not going to do that for you.
How will you lower TDS? Do you have a TDS meter? Same goes for gH and kH.
Where is your water coming from?
How big is the biofilter going to be?
Do you have a basic set of test kits? (i.e. no2, no3, nh4/nh3, pH...?)
Getting them to survive is what you should be worried about now, breeding is icing on the cake.