Should I get 600cc, I am a 5ft tall and 34 B. (photo)

I think that those implants will be way too big for your frame. Large volume implants (anything greater than 400 ccs) have a higher incidence of complication (and reoperation)  in general.  As implants get bigger, they also get wider, and that specific implant is likely too wide for your frame which can cause a number of issues.  I would agree with my colleague below that it is in your best interest to revisit with your plastic surgeon and discuss size again before your surgery. Good luck!

Greetings.  This is something you should discuss with your surgeon in advance of your surgery date. If you feel this seize is too large, then do not hesitate to say so.  There should be no misunderstanding between you and your surgeon.  Good luck!