Uh. 50,000 Lumens? That's a lotta lumens. Which is awesome. But that's also gonna be running at Imalent MS18 flashlights (which to be fair peak at 100,000 lumens) get well over 120 degrees C in temperature.

Your design seems to have cooling fins. But If it's radiating noticeable amount of heat, I'll only be running it in winter.