Which heads to get?

Be careful and do some more research: you almost need a spreadsheet to track it all!
- Hughes MA-X heads with 2.02" valves flow the same as EdELbrocks but their price is without the springs and retainers and so those need to be added.
- The EQ's from MagnumMopar have the springs but are 1.92" valves... looks like up to 10% less flow in the .200" to .400" lift range.
It's always sumpthin!

Hughes and MagnumMopar EQ's: probably better finished on the guides and valve concentricity.

The AL heads save around 50 lbs, and 70 lbs if you add in an AL intake manifold.

Yes on the added CR; generally .5 point (maybe a bit more) for the same octane.

As I've said before..... even 20 years ago there were no such reasonably priced, off-the-shelf excellent heads, and not at all 'back in the day'. You had to work it all up on your own. The options now are great, and you'll find something you will be happy with.