Will 300cc butt implants be enough to satisfy my needs?

I am 5' and about 85 pounds. I don't have a butt whatsoever and I'm very insecure about that. I really want a big bubble butt and my doctor recommended 300cc implants. I tried to ask for bigger but he said there's no way. The implants cost a lot of money so I want a dramatic change, will this be enough to satisfy my needs?! Please help