Well you may consider yourself a blind squirrel but you definitely have found a nut in me. I'm certifiable. My friends are afraid to tell me though. I think they find me entertaining?
I would get as many opinions on this subject as you can. Try to get to hear the engine running with the cam though. That will help right there.
I looked at a lot of cam profiles and think that the Comp Cams are the most recent profiles.
Many of the big name companies go back to the 60s and 70s and may be dated.
I think that after looking at as many dyno results as I could came to the conclusion that these heads need lift to work. .580 is on the low side.
The heads show flow gains to over 700 lift.
I thought 605 would be a good place to try considering the limited amount of time I put on the car, wear due to more lift is less of an issue, at the moment anyway.
My cam is 244 @ .050 and has 74 degrees of overlap.
I find it no worse then my 347 that is 236 @ 050 and has 62 overlap.
One of the great things about camshafts is that if you don't like what you have, get another one and try that.
They don't let me have mail at Xmas time. The paper is sharp.