Hi:
I will also recommend againist the blue ribbon eel, unless you can dedicate a tank to it, they are very difficult to get feeding regularly, they feed very slowly, and any other fish willout compete him for food.
Blue ribbons are not aggressive (thats a main problem) and they are meat eaters.
W/ that said snowflakes are not cannibals however they will often fight w/ new guys. Many of the fang toothed eels are eel eaters, skip these.
My concern is that your 14" snowflake will not accept any new comers.
How about just focusing on a few fish instead.
frank