I want to become a surrogate! Question below.

I had my first child in July of this year. My husband and I want one more and then we're done. However, I've started the process to become a surrogate! My only problem I'm having is should I wait until we're done with kids? If something happened during delivery and I couldn't have another I would be DEVASTATED. My first was born via C section so my next/surrogate baby would also be a c section. Should I wait or go for it?