[olddog]

You really need to ask yourself some more questions about what you want.

A rumpity rump rump idle is music to my ears. Do you like it?

A good sounding cam is also a poor low rpm peformance engine. Would it bother you if you had to keep the rpm above 2000 for smooth running? What if she wants to buck and hop and 1400 rpm?

EFI once set up properly has few problems, carbs have many factors that can make driving a PIA. Few know how to properly set up EFI on modified high performance engines, likewise few people know anything about carbs anymore (20 years since Detroit sold one). Pick your poison, but which do you want?