I highly suggest you start with one single species first to get your feet wet. While on the surface breeding clownfish may seem simple, you will kill many many many fry in the process - and hopefully not your parents. You are still very new to the reefing hobby, and while I applaud the ambition, there are a few things in the last post that raised some concerns for me.
First, do more research on the current state of the industry in regards to clownfish morphs and hybrids. Know the LARGE difference between morphs and hybrids, what it implies, and how the genitics can work for or against you. For example, an onyx and black/white are both mostly black fish, but offspring from them can/will be considerably different.
Second, don't think this will be a money making deal. It will take you a long time, lots of hours, and more failure than not raising your first few fish. I say that only because many want to raise clowns trying to earn extra cash. You have to have the passion for it besides $$ to actually be successfull. Dollars can make motiviations weak in when returns are not quick. It can also cause otherwise good breeders to take shortcuts and create sub-par quality fish.
You should get very familiar with genetics of fish, and how traits are passed on. You statement of "agetting traits set in, after the point where all the fry are the same..." This doesn't happen unless you are working with a pure species, and even then it doesn't always happen. If you and your wife had 30 kids, would they all be the same? no. Pure species will have a higher percentage of like offspring, and designer morphs/hybrids much less so. Research the background behind Bill Addison and C-Quest onyx. This will give you insight into what I'm referring to.
Something I already mentioned - hybrids. This is a HUGE can of worms. Some are VERY VERY sensitive to anyone knowingly creating hybrids. There was a recent CORAL article which pointed out some very common freshwater fish, and the attrocities on how they got there (gold fish with tumurous foreheads, bubbles under their eyes, shortened bodies, etc). Some people think clownfish are disappearing in the wild and it's up to us to save them, and hybridization ruins this chance. My own biased opinion is that some hybrids are OK as long as they are very knowningly sold as such, and the buyer recognizes they do not have a pure species. I think single hybrids are very interesting, and besides their beauty, can help us understand the genetics of clownfish better. However, taking a hybrid and making a secondary hybrid out of it I just don't think I could support. You would have created a true mutt clownfish. This streatches even my own creative view of cross breeding a bit to the extreme. I'm actually quite surprised more of the other highly hybrid-conservative haven't jumped on this yet - but be prepared for this to happen if you do proceed with this plan.
While my post is a bit of a debbie-downer, by all means research, research, research. Thinking outside of the box is always great, but knowing the ramifications to your ideas is also critical (growing a thick skin to the critisism is also key). Ask lots of questions, and find a pair of Ocellaris or Percs to start playing with. Chad (TCMAS) had a pair for sale just last week. I think once you get going your eyes will be opened to this whole aspect of breeding.
Last thought: I've noticed that about as soon as you think you have a good idea for the "next designer clownfish", ORA comes out with it the next quarter
