I can't help with business advice except to say, unless you have very deep pockets.
Yikes, that's theeee most important part!
I don't think my business would even exist if it wasn't for my wife's income and Social Security.
Of course, I straddled both horses. I sharpen, and early on I'd go anywhere to sharpen anything.
Ah, but washing manure off hoof-knives is not as much fun as it would seem.
But then, sharpening clients wanted better knives. I became a rep for JWW and Blue Ridge. I needed a resellers permit, however, that also gave me the credentials to sell automatices to police, firefighters and EMTs.
During the last 18 months I have enjoyed enough success to limit my business to selling and servicing high-end kitchen knives.
But here's the scope of time. Five years part-time. Ten years open to the "world" and occasionally earning gas money, and two years actually living without gut wrenching fear.
That's what it takes to become an "over night success."