Go for it. The property I live on had a blacksmith shop that burnrd downinthe 1940"s, the shop dated back to the early 19th century at least. On it was the remains of a furnace used to cast small cannon for the Confederacy. It was constrcuted of heavy stone and used a "tub" bellows and wooden pipe for the air scource, charcol was the feul of choice as it is heavily wooded here and there is evidence of extensive charcoling here and by the river.
Copper is a lot easier to melt than pig iron. Have a ball, be carefull though of the gases and the process its self.