Why would anyone not encourage an idea link this? That's crazy! You've got nothing to loose, except some time, and everything to gain by doing it.
Great links BTW! You should also check out (if you haven't already) The Plankton Culture Manual. Most all larval forms of critters need to eat plankton and this book will spell out how to grow several types of phyto as well as pods and BBS.
Florida Aqua Farms sells it probably the cheapest and most current publication and they carry a lot of other stuff that is useful for plankton culture.
The snails shouldn't be too difficult... Before I broke my 75g down I had baby snails popping up everywhere in it. I wasn't trying to raise them, they were just doing their thing naturally.
There was someone on RC who was trying to raise blue legs.... Not sure how far he was able to get them. The major challenge with some crustaceans, like crabs, is that some need a cue from their environment to metamorphose to the next stage. Still worth trying though
Also, see if you can't get e- access to some of the scientific marine journals at your local library or if you have a college library nearby and do a search for the species you want to culture. There might be some tidbits of info in there on life history, diet, etc.
Have you thought about adding some shrimps to the mix? Peppermints are easy to raise, maybe some of the others???
Now, I can't believe Aquawolf and Crvz haven't said this, but there is a fee for this
Pics of your setup should suffice
As well as keeping us updated on everything
Best Wishes!
I am now the proud owner of 3 75 gallon tanks and a sump of the same size. We are going to set up 2 for 
Excited and overwhelmed!
!
