It all depends on your tolerance to cold. I guess if you never dove in colder water it may be more impacting than others who are used to it. 60 is typical here in CA and most do fine in a 7mm full suit with hood gloves and booties. The important thing to remember is there is a huge difference in wetsuit quality and warmth not all 7mm suits are equal. I dive a 5mm suit that is actually warmer than my older 7mm and more flexible. There are some semi dry suits out there, I dont know much about them but it may be worth checking out.