Ported 452 or Edelbrock RPM

Hi

Here is a dilemma I'm facing...
What I have on my 471 is a set of 452 heads mildly ported by Koffels.
Heads flow 277cfm @ .600" lift. They have 3 angle valve job and stainless valves 2.08" and 1.74" size.
They are shaved down to 85cc chambers.

What I have on my shelf is a set of Edelbrock RPM 6091 casting heads that had some bowl work. They are supposed to flow 301cfm @ .600" lift. They have 3 angle valve job, titanium exhaust and stainless intake valves 2.14" and 1.81" size.
They have 74cc chambers (measured after machining them with spark plug in)

I'm giving flow @ .600 because I have 618 net lift solid roller cam.

With my 452 heads I have exactly 10.1:1 compression (measured).
With Edelbrock I'm facing around 11.2:1 compression.

There are multiple advantages that I see with Edelbrocks like nicer chambers, less weight, some extra power.
Are there any things that could put me off going with aluminum heads? Any special parts I'm not aware off?
What would you do in my situation? Would you swap the 452s?

Thank for your opinions on this.