You can keep CRS and RCS together but you might want to look into a buffering substrate like Fluval Shrimp Stratum or Azoo Plant Bed Grower. Both of those will buffer to about 6.8 (FSS 6.8-7) and both species can breed in that pH. You need to test the water first before you figure out which shrimp to go with. But if you have hard water, neos might be the only thing that will work if you're going to use tap and something inert like sand or flourite. And even then you have to watch pH and not let it get too crazy high (like over 8.4) So, learn about the different shrimps and different parameters FIRST, then figure out which way to go. A good site for just some basic info is
And don't forget to check the stickies at the top of the Shrimp Forum.
I probably will wait a bit until I know more about the hobby before I get into breeding. I will probably setup a small breeding tank in late February and attempt and see where it goes from there. Thanks for all the info!
Very few people make money at what many consider a hobby. The problem is simply too much supply: many of us have a few extra shrimp we can sell for whatever they can fetch for us to defray a few costs. That person is not taking a business-like approach and does not require a profitable price.
The person who develops a popular new line or can generate large volume at very low cost (the "Walmart" of shrimp breeders) might make a living, but for the rest of us it had better be fun.