Engine Builders-KB356 Piston Milling

I have a Kenne Bell and Powerdyne sitting on the shelf that was hoping the compression was going to be on the lower end.

Also, it was mentioned that a 114 LSA was too much for my cylinder head. What exactly does that mean? I went with that based on the fact I am retaining EFI and I had originally planned on putting 5-6lbs boost to it. Any information pertaining to that would be great!

Thanks!

Cc it in the cylinder, do the math, and let us know.
Its not over yet.