only thing i have to say is iron ore makes iron mat 100g ea=5k a stack so if you make 50x stack that = what kids 250k with that money you can buy a computer and a mill make a manufacturing account/shop leave it in kelan with iron mat on shelf or coin and BEFORE they shop runs out make more, you will allways have iron ore if you have alt's in cave like he said.
hope it helped
PS nice guide