Youre very welcome, wish I was more help on the cam for a low comp engine, Ive always had around 9-9.5:1 on my iron head engines & used comp cams.
Cliff & a few others are the experts on these things and im sure they will chime in here soon, might want to ask the question in the street section since it gets a lot more activity than a year/model specific section.
I have considered a cam swap to a crower suggested by cliff & im sure they are great cams, i just havent had any of the negative issues some claim on the XE cams in this engine, it runs great for what the engine/car is I see no reason for a major change like that on a lower mile street cruiser.
But just for the sake of interest in idle sound, heres a short vid of a start up on my 78 W72, also a little burnout leaving the track, it sounds like higher rpm than it really is, this was about a 2000rpm launch that spun to maybe 3000. Exhaust is 2.5 shop bent with a H pipe & slowmaster 40 series mufflers with no tail pipes.. splitter tip tail pipes are installed now though.
https://www.youtube.com/watch?v=lQVWNo5jCZU
https://www.youtube.com/watch?v=zozMBMWCwJU