check out the boobie bible on consultation etiquette
the surgeon will advise you on size so I wouldn’t go in asking for a cc especially if you have not see them lol
best bet is to take pictures in of the ‘proportions’ you are after as everyone is different and maybe have an idea on the bra size you want – although they will advise you that this isn’t accrate pictures are always best
1st consult is with a PC not a surgeon so maybe talk about shape/natural-ness etc and they will marry you up with a surgeon x