DRE EM after CST or ACCS EM

I am looking to pursue Emergency Medicine as a career full time. However, some part of me also wants to pursue Cardiac Surgery (which is a big part of why I am a doctor). So what I am thinking is I can get on the CST pathway, and let those three years help me get the surgical experience/training in and if i want to carry forward with that i can go down the Cardiac Surgery pathway or I can enter DRE EM.

A. Does this sound like a reasonable plan?

B.If I take up Core Surgical Training and then apply into DRE EM after conpletion of CST, would that mean i will have Double CCT at the end of EM training?

C. Should I stick with trying for ACCS EM?