You might want to contact a farrier for general conversation/advice, but for most horseshoeing, they beat the shoes into shape cold.
A guy around here made a "good" hobby-income by making custom fireplace accessories... grates, andirons, pokers. tongs, and other tools etc. Not that there would be a big demand for that in HI. He also made custom yard gates and decorative "branding irons" for people. Customers had to make up their own brand, though, like "Flying R" or "Rocking T" and the like, but now there's a "How To" on designing brands:
http://www.tscrabrands.com/design-brand.htmlI remember him wisecracking that one of his customer's brand designs was so big and complicated that it would have incinerated the whole cow. Others would have just made them medium rare.

Maybe there's a niche market there for other iron accessories in HI.
I piddled around with it for a while. Used a wheel rim for a firebox and a rear axle housing for a stand, plus a vacuum cleaner blower for air. Could even weld with it. Started to build a knife out of an auto leaf spring, but never finished it. Didn't have a real anvil with holes for stakes and such, just a section of railroad track that I roughly shaped in welding class.
Terry, 230RN