Help with my first engine build (5.9 Magnum)

Finally back to working on the Barracuda after a summer of farming. I started to hone the cylinders yesterday only to find another issue. In 3 of the cylinders there are rough areas of wear. I’d say the rough areas are all located about 3/4 the way down cylinder wall. Is this from piston slap, and does it need I’ll need to take it to the machine shop? Or is it possible it is below the lowest point that the rings will travel? My hope was to do a garage rebuild (without a machine shop)… but that may not be plausible anymore. Thanks everyone!

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