Trained on animefull. Contains his 2 in-game appearances, and an FEH alt that turned out quite well despite only having 2 training images:
Academy appearance: defLorenz, garreg mach monastery uniform, rose
Summer outfit (FEH): sumLorenz, navel, white jacket, red flower, open clothes, male swimwear, swim briefs
Timeskip appearance: warLorenz, long hair, armor, rose, white pants
Weight: 0.5-0.8
Around 0.7 works pretty well for his regular outfits.
Should only have to go down to 0.5 or 0.6 when doing significant outfit changes, especially with defLorenz.