My best advice is don't live beyond your means. I've been in
business about 10 years, and a goldsmith for 20. I started in a
VERY tiny place and only when I was making enough to expand (and
was never sleeping), did I move to larger quarters and begin to
hire people. And as the years have past, I have always waited
until I'm busting at the seams before hiring more people or
buying expensive equipment, (now have seven full time people). I
have never had to borrow money and could always pay my bills.
Also you need to find a market that will sustain you, it may not
be exactly what you want to do but hopfully its close. As time
passes you can specialize more and more, without affecting your
income. If you insist on specialization from the beginning you
may never get off the ground. Find out what people want and give
it to them. Oh yeah, don't plan on being rich.