Get the glass. Make it so you can remove the plate so you don't try to get stuff unstuck while its attached to the printer. The gouges should not affect heating of the glass plate. They are cosmetic for the most part just make sure they are all lower than the rest of the bed. If not sand the burrs down.

This is why people use glass or other removable build surfaces.... yank the plate... let it cool and and save the printer the abuse of a stuck print. When you get brutal with a print like that while in the printer you mess with the bed levelers and other bendable parts.