/// Another Bunch Of 273 Commando Rebuild Questions? ///

I have been reading the thread you mentioned about rebuilding a small block.
Very informative. Thank you

My plan for the engine is the following:
1) Re-ring (Using Chrysler new old stock 273 rings) using the cleaned OEM pistons
2) New rod and crank bearings and cam bearings if needed.
3) Valve job. (Exhaust and intake valves are leaking on #6 & #7 cylinders) The machine shop mentioned to install all stainless-steel valves in lieu of hardened seats
4) Have the block checked for any issues, possibly decked if required.
5) Reuse the cam. I am tagging and bagging each lifter and associated pushrods to clean and install in their original locations
6) Hone and deglaze the cylinders. The bore and piston measurements so far are within the factory spec.
7) Remove all freeze plugs and oil galley plugs for cleaning (With brushes, wire wheel etc.) with a both a pressure washer and or a thorough cleaning at the machine shop.
8) Crank polished, hopefully it won't need to be ground.

As for the cleaning, that's the worst part. I fully understand about making everything surgery clean before assembly.
This engine had so much grime on the exterior and horrible carbon buildup on the pistons. It's as though the thing was being ran without an air cleaner for years. It's taking me close to 1 1/2 hours to clean each piston removing carbon from both the head and ring lands

The goal is to make it a great running reliable street engine without spending a fortune.

Thanks for your input.