Free Flight Indoorist
For what it's worth, there have been several rocket powered X wings built, some pretty large, and they are stable, so that's half the battle right there. I am told some have been made to glide. Unfortunately that's the most I can tell you, and I don't know if canards were involved. I know Estes got theirs to fly by putting clear fins on the back of the engine nacelles, which do extend much farther back than in your rendition. You might give that a shot.