470 vs 600 vs 750cc on a tall, broad trans woman's frame — how do I stay natural but proportional? (Photos)

I'm a trans woman planning breast augmentation and I'm stuck between sizes. My stats: 5'9", around 100 kg, broad shoulders and a wide chest wall, about a 40" underbust and currently roughly a 40B. I have limited natural breast growth from HRT. My surgeon has shown me three Mentor cohesive silicone options, all placed subglandular (over the muscle) and all on the same base width — so the only real difference is projection: 470cc Moderate Classic (~35 mm projection) 600cc Moderate Plus (~46 mm projection) 750cc High Profile (~59 mm projection) He recommends the 600cc Moderate Plus. What I want is a natural, gently sloping (teardrop) look — soft upper pole, volume lower, mild natural settle. I really want to avoid a round, "puffed-up," over-projected look with visible implant edges. But because my frame and chest are large, I'm genuinely worried that going too small won't look proportional or "won't show." So I feel caught between natural and proportional. My questions for surgeons and anyone with a similar build: On a fixed base width like this, how much difference in upper-pole fullness should I actually expect between 470, 600, and 750? Is 600 Moderate Plus a sensible middle, or would you lean smaller/larger for a broad frame? Does over-the-muscle placement change your size/profile advice, and how do you minimize visible upper-pole edges or rippling given limited tissue coverage? Would a more cohesive gel (e.g., MemoryGel Xtra) help, or would it push me toward the round lo