I can relate to the OP's decision process. In my old J, I replaced all 4 cylinders with new while chasing a major oil consumption issue at around 1200 hours SMOH. Since I cannot do my own labor, after the best efforts to identify the "Bad" cylinder with compression testing, data trends, and borescoping, we were left with removal and peeking. Of course, it was the 4th cylinder to remove that showed a smoking gun of a trashed oil ring. The labor costs were such that it just made sense to replace all the cylinders rather than just return them to service after overhauling the one that we found had the broken ring. If I was my own A&P, I would have considered cleaning up the 3 good cylinders, but if spending 8 AMU's, I might as well spend 12 AMU's and never worry about cylinders for the rest of my ownership. I flipped the old cylinders, which I could not do if I had overhauled them, getting some costs back.
My 310 STC'ed Ovation has 3 original cylinders and 3 overhauled at 2300 hours. If I remove a cylinder now, it is probably weighed against an overhaul of the entire engine.
-dan