Periareolar incision with large (650ccs+) implant?

I just had my first consult with Dr. Alavi in san diego yesterday and am extremely excited for my BA in September! While the details are not set now and we will work them out at my pre-op, i am planning on getting 650-750 CC motiva ergonomix implants and he said that was doable but when talking about incision types he mentioned favoring periareolar over inframammary due do experience and less scarring. I am all for that if done well but i just wanted to ask here if doing that incision type with a larger implant on smaller areola (about the size of a quarter) is as safe as the other options. As well as, is there a higher risk of nipple sensitivity loss from needing that bigger incision for the implant. Any information is greatly appreciated thank you :)