No, but I'd fear the JD would be the boss. Sev's are quite mellow, and can be housed with largish community fish - you couldn't do this with a JD. The FM wouldn't be the problem (although my male one turned crazy, flaring at my EBJD regularly).
Have you considered an EBJD, as opposed to a regular JD, as they're a lot more mellow? Then I could see your wishlist working better (although they are quite sensitive until larger than 3-4"). They are quite pricey too though...