I just made one that came out really nice. A little Special B works well for some of the darker-fruit overtones, maybe a half-pound at most. It's like a REALLY dark crystal malt, so you should be able to steep it with no problems. You're only at 14 SRM, the Special B will add a little more color as well, get you a little darker.
Also, the dark liquid candi syrup makes a really nice addition (same role as the regular brown sugar, but it should be better).