530 lb-ft should move a Galaxie around pretty easily.
If you plan on upgrades down the road, I would suggest a swap to TFS heads instead of the Edelbrocks. My 445's with TFS heads, Performer RPM intake, 10.25:1, and a mild hydraulic roller make 550 hp and 590 lb-ft.
A new aluminum block can run anywhere from $6000-8000 depending on the manufacturer (Pond or Shelby) and won't net you any horsepower (you may even lose a few). The head swap would cost you about $1900 and would give you a much bigger bang for the buck.
Yeah, I was trying to deal with local builder, i have used before. They do a good job overall, but are getting up in age, and have transitioned more to production engine side, not as good at communicating as they were in past.
I probably could have gotten more for my money dealing with an FE specialist. Wish I had known about the TFS heads. Im sure i can get a little more swapping stuff over to roller and doing a little head work etc.
I hope to enjoy it for many years, then I will contact Lykins😀👍