I cannot advise you on the cam. I simply don't have enough experience using them. I am not going to arm chair coach from something I have read but not done.
Pantera Doug might be able to help as he has a lot more experience using them then I. I can only really say I am very happy with my set up. Like I said, I also have very long primary headers which I think is helpful.
As far as rich idle, I did at first. There are a couple of concepts which help you understand what needs to be done in tuning. First, you drive on your idle circuit. In fact, my brother in a different high HP car plugged the main jets as an experiment and took the car for a drive into town. As long as he was not racing the car, the car ran fine with no other changes!!!
What I love is jet changes are easy to make.
Your idle circuit consist of an idle jet and an idle air holder. When idling your fuel is primarily off the idle jet. When driving it's both. The mixture of the two set your driving mixture. sooo....if your idle is too rich, you lean your idle jet and enrichen your idle holder.
Your idle jet holder is actually an air bleed emulsion tube. To enrichen, you make it smaller.
I also have the 3rd hole drilled in the transition circuit. If you google that you will find step by step to do that.
These are easy carbs to work on whihc makes them fun. When I got them they were purple. I stripped them down and powder coated them and rebuilt them. They are fun carbs to work with.
What's funny is every time I come up to a car show people says "wow what a great injection system!". I think Hm, you're the guy who bought a 2016 corvette and brought it to a car show!