Which of these cams would be better 416ci

Depends what you want to do with the car Dan, do you want it to be a bit cranky sounding or something that sounds like a relatively stock idle and still goes well being what the car is.

If you are wanting something a bit stealthy I would stay with the smaller cams, especially with the 3000rpm converter and 3.5 gears. With this type of combo I would go with a Performer RPM non airgap as it will give a more factory appearance all painted up than the air gap.

If you go up in converter and gears then the bigger cam will suit and you could go to a single plane inlet.

Not sure much more lift than what these cams have will be of any use if the Edelbrock heads are stock, mine peaked flowed at just over 500 thou lift out of the box.