There is no cardiac arrest skill where you have to be off scene in 10 minutes. That would be trauma.
Exactly. The 10 minute "golden rule" is strictly for trauma. You can find yourself on scene for 3 hours for a cardiac arrest, and be doing the best damn job ever.
As well, I just want to clarify some of the terms and acronyms you're mentioning, as you are not using them correctly. I'm only being picky because the confusion will nip you on the registry test.
ABC = Airway, Breathing, Circulation. You got that.
CAB = AHA's acronym for Compressions, Airway, Breathing. This indicates the order of importance, which is widely supported in today's systems. As I mentioned before, compressions are THE most important thing. Next is having an open airway. Studies have shown that merely having an open airway is sometimes more effective than applying some sort of PPV at all. Breathing is the use of your PPV device, which would be a BVM+mask for a NREMT.
"Head to Toe" - This is a type of assessment, as you corrected yourself. Not the primary assessment, it is considered one of the Secondary Assessments. In the Secondary there is a Rapid Head to Toe or Modified Secondary Assessment. The Modified is used when you know exactly what is going on, ie a forearm fracture secondary to a fall. A Rapid Head to Toe is used when you don't 100% know what's going on, ie Pt experienced LOC.
Textbook wise, your Primary Assessment (ABCs) covers anything that is worthy of your attention in the event that the Pt is in cardiac arrest (major trauma, airway blockage, etc.). At this point we don't care about potentially fractured ribs or dislocated ankle or discolored left testicle. As seen in the flowchart for ATCs, the algorithm loops in the AHA protocols during cardiac arrest for a BLS provider. You have no reason to go elsewhere, as it simply doesn't matter. Your focus is compressions, early defib, and getting ALS on scene to get meds on board.