I already said this on G+, but from what I've seen of mochas and het russos (as well as their homozygous forms), I firmly believe they are most likely the same mutation. I'm willing to bet you'd get something with a bit of pattern on it like that opal diamond. If nothing else you will at least be able to prove whether or not mocha and het russo are the same thing and make some pretty powerful white snakes. You'd always have the next season to make purple passions, which will never cease to be popular. Phantom likes to add pattern and colour to anything in the BEL complex, so it's more likely than not that you'll get something that isn't pure white. My vote: Pair up the super mocha and the phantom!