In this case, an XPl-HI would boost throw by a significant amount, on the 20mm board if it fits: http://kaidomain.com/Flashlight-DIY-and-Tools/LED-Emitters-or-LED-Star-on-PCB/CREE-XP-L-Series-LEDs/Cree-XP-L-HI-V3-3C-Neutral-White-5000K-LED-Emitter