Anyone install Edlebrock aluminum heads ?

Thats what I was thinking, a couple hundred to mill stock heads. I just don’t want to be unsatisfied if I go through the hassle of the complete process with stock milling. While the complete Edlebrock option is going to cost between 1500 and 1800.
My engine has an unknown aftermarket cam and unknown pistons. But, believe pistons are stock. Edlebrock 4 barrel and intake. It runs very well with good power. But, I’m looking to bump it up into the 350-400 hp range. I assume it’s making close to 300 as is. I also understand it’s important to know the current cam lift to understand what compression ratio will be final result after head changes.
But, someone correct me if I’m wrong. I don’t see any problems with taking my heads and milling them down 30-60 thousandths without verifying the actual cam as long as I don’t change anything else ? I think that would also apply if I’m only swapping to let’s say 64cc aluminum heads without changing anything else ? No issues ?